diff --git a/index.js b/index.js
index 6944f2fe..6688ecfc 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,7 @@
 require('v8-compile-cache');
-const { app } = require('electron');
+const { app } = require('electron'),
+      {resolve} = require("path"),
+      CiderBase = require ('./src/main/cider-base');
 
 // Analytics for debugging.
 const ElectronSentry = require("@sentry/electron");
@@ -33,9 +35,11 @@ const configSchema = {
         "enable_yt": false,
     },
     "lastfm": {
-        "enabled": true,
+        "enabled": false,
         "scrobble_after": 30,
-        "auth_token": ""
+        "auth_token": "",
+        "enabledRemoveFeaturingArtists" : true,
+        "NowPlaying": "true"
     }
 }
 
@@ -119,4 +123,60 @@ app.on('widevine-update-pending', (currentVersion, pendingVersion) => {
 app.on('widevine-error', (error) => {
     console.log('[Cider][Widevine] Widevine installation encountered an error: ' + error)
     app.exit()
-})
\ No newline at end of file
+})
+
+if (process.defaultApp) {
+    if (process.argv.length >= 2) {
+        app.setAsDefaultProtocolClient('cider', process.execPath, [resolve(process.argv[1])])
+        app.setAsDefaultProtocolClient('ame', process.execPath, [resolve(process.argv[1])])
+        app.setAsDefaultProtocolClient('itms', process.execPath, [resolve(process.argv[1])])
+        app.setAsDefaultProtocolClient('itmss', process.execPath, [resolve(process.argv[1])])
+        app.setAsDefaultProtocolClient('musics', process.execPath, [resolve(process.argv[1])])
+        app.setAsDefaultProtocolClient('music', process.execPath, [resolve(process.argv[1])])
+    }
+} else {
+    app.setAsDefaultProtocolClient('cider') // Custom AME Protocol
+    app.setAsDefaultProtocolClient('ame') // Custom AME Protocol
+    app.setAsDefaultProtocolClient('itms') // iTunes HTTP Protocol
+    app.setAsDefaultProtocolClient('itmss') // iTunes HTTPS Protocol
+    app.setAsDefaultProtocolClient('musics') // macOS Client Protocol
+    app.setAsDefaultProtocolClient('music') // macOS Client Protocol
+}
+
+app.on('open-url', (event, url) => {
+    event.preventDefault()
+    if (url.includes('ame://') || url.includes('itms://') || url.includes('itmss://') || url.includes('musics://') || url.includes('music://')) {
+        CiderBase.LinkHandler(url)
+    }
+})
+
+app.on('second-instance', (_e, argv) => {
+    console.warn(`[InstanceHandler][SecondInstanceHandler] Second Instance Started with args: [${argv.join(', ')}]`)
+
+    // Checks if first instance is authorized and if second instance has protocol args
+    argv.forEach((value) => {
+        if (value.includes('ame://') || value.includes('itms://') || value.includes('itmss://') || value.includes('musics://') || value.includes('music://')) {
+            console.warn(`[InstanceHandler][SecondInstanceHandler] Found Protocol!`)
+            CiderBase.LinkHandler(value);
+        }
+    })
+
+    if (argv.includes("--force-quit")) {
+        console.warn('[InstanceHandler][SecondInstanceHandler] Force Quit found. Quitting App.');
+        // app.isQuiting = true
+        app.quit()
+    } else if (CiderBase.win && true) { // If a Second Instance has Been Started
+        console.warn('[InstanceHandler][SecondInstanceHandler] Showing window.');
+        app.win.show()
+        app.win.focus()
+    }
+})
+
+if (!app.requestSingleInstanceLock() && true) {
+    console.warn("[InstanceHandler] Existing Instance is Blocking Second Instance.");
+    app.quit();
+   // app.isQuiting = true
+}
+
+
+  
\ No newline at end of file
diff --git a/package.json b/package.json
index 1a02b53c..a45419e1 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,7 @@
     "electron-window-state": "^5.0.3",
     "express": "^4.17.2",
     "get-port": "^5.1.1",
+    "lastfmapi": "^0.1.1",
     "mpris-service": "^2.1.2",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
diff --git a/resources/lfmApiCredentials.json b/resources/lfmApiCredentials.json
new file mode 100644
index 00000000..69af5902
--- /dev/null
+++ b/resources/lfmApiCredentials.json
@@ -0,0 +1,4 @@
+{
+    "key": "174905d201451602407b428a86e8344d",
+    "secret": "be61d4081f6adec150f0130939f854bb"
+}
\ No newline at end of file
diff --git a/src/main/cider-base.js b/src/main/cider-base.js
index 18cdd1c4..52786201 100644
--- a/src/main/cider-base.js
+++ b/src/main/cider-base.js
@@ -7,6 +7,7 @@ const windowStateKeeper = require("electron-window-state");
 const os = require('os');
 const yt = require('youtube-search-without-api-key');
 const discord = require('./discordrpc');
+const lastfm = require('./lastfm');
 const mpris = require('./mpris');
 
 // Analytics for debugging.
@@ -14,9 +15,10 @@ const ElectronSentry = require("@sentry/electron");
 ElectronSentry.init({dsn: "https://68c422bfaaf44dea880b86aad5a820d2@o954055.ingest.sentry.io/6112214"});
 
 const CiderBase = {
+    win: null,
     async Start() {
         this.clientPort = await getPort({port: 9000});
-        this.CreateBrowserWindow()
+        this.win = this.CreateBrowserWindow()
     },
     clientPort: 0,
     CreateBrowserWindow() {
@@ -204,15 +206,22 @@ const CiderBase = {
 
         mpris.connect(win)
 
+        lastfm.authenticate()
         //  Discord
         discord.connect((app.cfg.get("general.discord_rpc") == 1) ? '911790844204437504' : '886578863147192350');
         ipcMain.on('playbackStateDidChange', (_event, a) => {
+            app.media = a;
             discord.updateActivity(a)
             mpris.updateState(a)
+            lastfm.scrobbleSong(a)
+            lastfm.updateNowPlayingSong(a)
         });
         ipcMain.on('nowPlayingItemDidChange', (_event, a) => {
+            app.media = a;
             discord.updateActivity(a)
             mpris.updateAttributes(a)
+            lastfm.scrobbleSong(a)
+            lastfm.updateNowPlayingSong(a)
         });
 
         return win
@@ -224,6 +233,31 @@ const CiderBase = {
             dev: app.isPackaged
         }
     },
+    LinkHandler: (startArgs) => {
+        if (!startArgs) return;
+        console.log("lfmtoken",String(startArgs))
+        if (String(startArgs).includes('auth')) {
+            let authURI = String(startArgs).split('/auth/')[1]
+            if (authURI.startsWith('lastfm')) { // If we wanted more auth options
+                const authKey = authURI.split('lastfm?token=')[1];
+                app.cfg.set('lastfm.enabled', true);
+                app.cfg.set('lastfm.auth_token', authKey);
+                CiderBase.win.webContents.send('LastfmAuthenticated', authKey);
+                lastfm.authenticate()
+            }
+        } else {
+            const formattedSongID = startArgs.replace('ame://', '').replace('/', '');
+            console.warn(`[LinkHandler] Attempting to load song id: ${formattedSongID}`);
+
+            // setQueue can be done with album, song, url, playlist id
+            this.win.webContents.executeJavaScript(`
+                MusicKit.getInstance().setQueue({ song: '${formattedSongID}'}).then(function(queue) {
+                    MusicKit.getInstance().play();
+                });
+            `).catch((err) => console.error(err));
+        }
+
+    },
 
     async InitWebServer() {
         const webapp = express();
diff --git a/src/main/lastfm.js b/src/main/lastfm.js
new file mode 100644
index 00000000..74dfa5b2
--- /dev/null
+++ b/src/main/lastfm.js
@@ -0,0 +1,153 @@
+const {app, Notification} = require('electron'),
+    fs = require('fs'),
+    {resolve} = require('path'),
+    sessionPath = resolve(app.getPath('userData'), 'session.json'),
+    apiCredentials = require('../../resources/lfmApiCredentials.json'),
+    LastfmAPI = require('lastfmapi');
+
+const lfm = {
+    authenticateFromFile: function () {
+        let sessionData = require(sessionPath)
+        console.log("[LastFM][authenticateFromFile] Logging in with Session Info.")
+        app.lastfm.setSessionCredentials(sessionData.name, sessionData.key)
+        console.log("[LastFM][authenticateFromFile] Logged in.")
+    },
+
+    authenticate: function () {
+        if (app.cfg.get('lastfm.auth_token')) {
+            app.cfg.set('lastfm.enabled', true);
+        }
+
+        if (!app.cfg.get('lastfm.enabled') || !app.cfg.get('lastfm.auth_token')) {
+            app.cfg.set('lastfm.enabled', false);
+            return
+        }
+
+        const lfmAPI = new LastfmAPI({
+            'api_key': apiCredentials.key,
+            'secret': apiCredentials.secret
+        });
+
+        app.lastfm = Object.assign(lfmAPI, {cachedAttributes: false, cachedNowPlayingAttributes: false});
+
+        fs.stat(sessionPath, function (err) {
+            if (err) {
+                console.error("[LastFM][Session] Session file couldn't be opened or doesn't exist,", err)
+                console.log("[LastFM][Auth] Beginning authentication from configuration")
+                app.lastfm.authenticate(app.cfg.get('lastfm.auth_token'), function (err, session) {
+                    if (err) {
+                        throw err;
+                    }
+                    console.log("[LastFM] Successfully obtained LastFM session info,", session); // {"name": "LASTFM_USERNAME", "key": "THE_USER_SESSION_KEY"}
+                    console.log("[LastFM] Saving session info to disk.")
+                    let tempData = JSON.stringify(session)
+                    fs.writeFile(sessionPath, tempData, (err) => {
+                        if (err)
+                            console.log("[LastFM][fs]", err)
+                        else {
+                            console.log("[LastFM][fs] File was written successfully.")
+                            lfm.authenticateFromFile()
+                            new Notification({
+                                title: app.getName(),
+                                body: "Successfully logged into LastFM using Authentication Key."
+                            }).show()
+                        }
+                    })
+                });
+            } else {
+                lfm.authenticateFromFile()
+            }
+        })
+    },
+
+    scrobbleSong: async function (attributes) {
+        await new Promise(resolve => setTimeout(resolve, app.cfg.get('lastfm.scrobble_after') * 1000));
+        const currentAttributes = app.media;
+        
+        if (!app.lastfm || app.lastfm.cachedAttributes === attributes ) {
+            return
+        }
+
+        if (app.lastfm.cachedAttributes) {
+            if (app.lastfm.cachedAttributes.playParams.id === attributes.playParams.id) return;
+        }
+
+        if (currentAttributes.status && currentAttributes === attributes) {
+            if (fs.existsSync(sessionPath)) {
+                // Scrobble playing song.
+                if (attributes.status === true) {
+                    app.lastfm.track.scrobble({
+                        'artist': lfm.filterArtistName(attributes.artistName),
+                        'track': attributes.name,
+                        'album': attributes.albumName,
+                        'albumArtist': this.filterArtistName(attributes.artistName),
+                        'timestamp': new Date().getTime() / 1000
+                    }, function (err, scrobbled) {
+                        if (err) {
+                            return console.error('[LastFM] An error occurred while scrobbling', err);
+                        }
+
+                        console.log('[LastFM] Successfully scrobbled: ', scrobbled);
+                    });
+                    app.lastfm.cachedAttributes = attributes
+                }
+            } else {
+                this.authenticate();
+            }
+        } else {
+            return console.log('[LastFM] Did not add ', attributes.name , '-' , lfm.filterArtistName(attributes.artistName), 'because now playing a other song.');
+        }
+    },
+
+    filterArtistName: function (artist) {
+        if (!app.cfg.get('lastfm.enabledRemoveFeaturingArtists')) return artist;
+
+        artist = artist.split(' ');
+        if (artist.includes('&')) {
+            artist.length = artist.indexOf('&');
+        }
+        if (artist.includes('and')) {
+            artist.length = artist.indexOf('and');
+        }
+        artist = artist.join(' ');
+        if (artist.includes(',')) {
+            artist = artist.split(',')
+            artist = artist[0]
+        }
+        return artist.charAt(0).toUpperCase() + artist.slice(1);
+    },
+
+    updateNowPlayingSong: function (attributes) {
+        if (!app.lastfm ||app.lastfm.cachedNowPlayingAttributes === attributes  | !app.cfg.get('lastfm.NowPlaying')) {
+            return
+        }
+
+        if (app.lastfm.cachedNowPlayingAttributes) {
+            if (app.lastfm.cachedNowPlayingAttributes.playParams.id === attributes.playParams.id) return;
+        }
+
+        if (fs.existsSync(sessionPath)) {
+            // update Now Playing
+            if (attributes.status === true) {
+                app.lastfm.track.updateNowPlaying({
+                   'artist': lfm.filterArtistName(attributes.artistName),
+                   'track': attributes.name,
+                   'album': attributes.albumName,
+                   'albumArtist': this.filterArtistName(attributes.artistName)
+                }, function (err, nowPlaying) {
+                    if (err) {
+                        return console.error('[LastFM] An error occurred while updating nowPlayingSong', err);
+                    }
+
+                    console.log('[LastFM] Successfully updated nowPlayingSong', nowPlaying);                 
+                });
+                app.lastfm.cachedNowPlayingAttributes = attributes
+            }
+            
+        } else {
+            this.authenticate()
+        }
+    }
+}
+
+module.exports = lfm;
\ No newline at end of file
diff --git a/src/renderer/index.js b/src/renderer/index.js
index 9a8d7a18..429206ab 100644
--- a/src/renderer/index.js
+++ b/src/renderer/index.js
@@ -2425,6 +2425,37 @@ const app = new Vue({
             }
             CiderContextMenu.Create(event, menus[useMenu])
         },
+            LastFMDeauthorize() {
+                ipcRenderer.invoke('setStoreValue', 'lastfm.enabled', false).catch((e) => console.error(e));
+                ipcRenderer.invoke('setStoreValue', 'lastfm.auth_token', '').catch((e) => console.error(e));
+                app.cfg.lastfm.auth_token = "";
+                app.cfg.lastfm.enabled = false;
+                 const element = document.getElementById('lfmConnect');
+                 element.innerHTML = 'Connect';
+                 element.onclick = app.LastFMAuthenticate;
+            },
+            LastFMAuthenticate() {
+                console.log("wag")
+                const element = document.getElementById('lfmConnect');
+                window.open('https://www.last.fm/api/auth?api_key=174905d201451602407b428a86e8344d&cb=ame://auth/lastfm');
+                element.innerText = 'Connecting...';
+
+                /* Just a timeout for the button */
+                setTimeout(() => {
+                    if (element.innerText === 'Connecting...') {
+                        element.innerText = 'Connect';
+                        console.warn('[LastFM] Attempted connection timed out.');
+                    }
+                }, 20000);
+
+                ipcRenderer.on('LastfmAuthenticated', function (_event, lfmAuthKey) {
+                    app.cfg.lastfm.auth_token = lfmAuthKey;
+                    app.cfg.lastfm.enabled = true;
+                    element.innerHTML = `Disconnect\n<p style="font-size: 8px"><i>(Authed: ${lfmAuthKey})</i></p>`;
+                    element.onclick = app.LastFMDeauthorize;
+                });
+            }
+        
     }
 })
 
diff --git a/src/renderer/views/pages/settings.ejs b/src/renderer/views/pages/settings.ejs
index 5dbac871..5f773116 100644
--- a/src/renderer/views/pages/settings.ejs
+++ b/src/renderer/views/pages/settings.ejs
@@ -396,7 +396,7 @@
                     </select>
                 </div>
             </div>
-            <div class="md-option-line">
+            <div class="md-option-line" v-show="app.cfg.general.discord_rpc != 0">
                 <div class="md-option-segment">
                     Clear Discord RPC on Pause
                 </div>
@@ -407,6 +407,39 @@
                     </select>
                 </div>
             </div>
+            <div class="md-option-line">
+                <div class="md-option-segment">
+                    LastFM Scrobbling
+                </div>
+                <div class="md-option-segment md-option-segment_auto">
+                    <label class="list-button list-element" id="lfmConnect" ref="lfmConnect"
+                    onclick="app.LastFMAuthenticate()">Connect</label>
+                </div>
+            </div>
+            <div class="md-option-line" v-show ="app.cfg.lastfm.enabled">
+                <div class="md-option-segment">
+                    LastFM Scrobble Delay
+                </div>
+                <div class="md-option-segment md-option-segment_auto" >
+                    <input type="number" v-model="app.cfg.lastfm.scrobble_after"/>
+                </div>
+            </div>
+            <div class="md-option-line" v-show ="app.cfg.lastfm.enabled">
+                <div class="md-option-segment">
+                    Enable LastFM Now Playing 
+                </div>
+                <div class="md-option-segment md-option-segment_auto" >
+                    <input type="checkbox"  v-model="app.cfg.lastfm.NowPlaying" switch/>
+                </div>
+            </div>
+            <div class="md-option-line" v-show ="app.cfg.lastfm.enabled">
+                <div class="md-option-segment">
+                    Remove featuring artists from song title (LastFM)
+                </div>
+                <div class="md-option-segment md-option-segment_auto" >
+                    <input type="checkbox"  v-model="app.cfg.lastfm.enabledRemoveFeaturingArtists" switch/>
+                </div>
+            </div>
             <div class="md-option-header">
                 <span>Unfinished / Non Functional</span>
             </div>
@@ -420,22 +453,6 @@
                     <input type="checkbox" switch/>
                 </div>
             </div>
-            <div class="md-option-line">
-                <div class="md-option-segment">
-                    LastFM Scrobbling
-                </div>
-                <div class="md-option-segment md-option-segment_auto">
-                    <input type="checkbox" switch/>
-                </div>
-            </div>
-            <div class="md-option-line">
-                <div class="md-option-segment">
-                    LastFM Scrobble Delay
-                </div>
-                <div class="md-option-segment md-option-segment_auto">
-                    <input type="checkbox" switch/>
-                </div>
-            </div>
             <div class="md-option-line">
                 <div class="md-option-segment">
                     Theme
@@ -520,6 +537,15 @@
                 app: this.$root
             }
         },
+        mounted: function () {
+            if (app.cfg.lastfm.enabled){
+                const element = document.getElementById('lfmConnect');
+                if (element){
+                element.innerHTML = `Disconnect\n<p style="font-size: 8px"><i>(Authed: ${app.cfg.lastfm.auth_token})</i></p>`;
+                element.onclick = app.LastFMDeauthorize;
+                }
+            }
+        },
         methods: {
 
         }