diff --git a/extensions/Lily/SoundExpanded.js b/extensions/Lily/SoundExpanded.js
new file mode 100644
index 0000000000..aefe95072b
--- /dev/null
+++ b/extensions/Lily/SoundExpanded.js
@@ -0,0 +1,359 @@
+// Name: Sound Expanded
+// Description: Adds more sound-related blocks.
+// ID: lmsSoundExpanded
+// By: LilyMakesThings <https://scratch.mit.edu/users/LilyMakesThings/>
+
+(function (Scratch) {
+  "use strict";
+
+  const vm = Scratch.vm;
+  const runtime = vm.runtime;
+  const soundCategory = runtime.ext_scratch3_sound;
+
+  class SoundExpanded {
+    getInfo() {
+      return {
+        id: "lmsSoundExpanded",
+        color1: "#CF63CF",
+        color2: "#C94FC9",
+        color3: "#BD42BD",
+        name: "Sound Expanded",
+        blocks: [
+          {
+            opcode: "startLooping",
+            blockType: Scratch.BlockType.COMMAND,
+            text: "start looping [SOUND]",
+            arguments: {
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+              START: {
+                type: Scratch.ArgumentType.NUMBER,
+                defaultValue: 0,
+              },
+            },
+          },
+          {
+            opcode: "stopLooping",
+            blockType: Scratch.BlockType.COMMAND,
+            text: "end looping [SOUND]",
+            arguments: {
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+            },
+          },
+          {
+            opcode: "isLooping",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "[SOUND] is looping?",
+            arguments: {
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+            },
+          },
+
+          "---",
+
+          {
+            opcode: "stopSound",
+            blockType: Scratch.BlockType.COMMAND,
+            text: "stop sound [SOUND]",
+            arguments: {
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+            },
+          },
+          {
+            opcode: "pauseSounds",
+            blockType: Scratch.BlockType.COMMAND,
+            text: "pause all sounds",
+            arguments: {
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+            },
+          },
+          {
+            opcode: "resumeSounds",
+            blockType: Scratch.BlockType.COMMAND,
+            text: "resume all sounds",
+            arguments: {
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+            },
+          },
+
+          "---",
+
+          {
+            opcode: "isSoundPlaying",
+            blockType: Scratch.BlockType.BOOLEAN,
+            text: "sound [SOUND] is playing?",
+            arguments: {
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+            },
+          },
+          {
+            opcode: "attributeOfSound",
+            blockType: Scratch.BlockType.REPORTER,
+            text: "[ATTRIBUTE] of [SOUND]",
+            arguments: {
+              ATTRIBUTE: {
+                type: Scratch.ArgumentType.STRING,
+                menu: "attribute",
+              },
+              SOUND: {
+                type: Scratch.ArgumentType.SOUND,
+              },
+            },
+          },
+          {
+            opcode: "getSoundEffect",
+            blockType: Scratch.BlockType.REPORTER,
+            text: "[EFFECT] of [TARGET]",
+            arguments: {
+              EFFECT: {
+                type: Scratch.ArgumentType.STRING,
+                menu: "effect",
+              },
+              TARGET: {
+                type: Scratch.ArgumentType.STRING,
+                menu: "targets",
+              },
+            },
+          },
+          "---",
+          {
+            opcode: "setProjectVolume",
+            blockType: Scratch.BlockType.COMMAND,
+            text: "set project volume to [VALUE]%",
+            arguments: {
+              VALUE: {
+                type: Scratch.ArgumentType.NUMBER,
+                defaultValue: 100,
+              },
+            },
+          },
+          {
+            opcode: "changeProjectVolume",
+            blockType: Scratch.BlockType.COMMAND,
+            text: "change project volume by [VALUE]",
+            arguments: {
+              VALUE: {
+                type: Scratch.ArgumentType.NUMBER,
+                defaultValue: -10,
+              },
+            },
+          },
+          {
+            opcode: "getProjectVolume",
+            blockType: Scratch.BlockType.REPORTER,
+            text: "project volume",
+          },
+        ],
+        menus: {
+          attribute: {
+            acceptReporters: false,
+            items: ["length", "channels", "sample rate", "dataURI"],
+          },
+          effect: {
+            acceptReporters: false,
+            items: ["pitch", "pan"],
+          },
+          targets: {
+            acceptReporters: true,
+            items: "_getTargets",
+          },
+        },
+      };
+    }
+
+    startLooping(args, util) {
+      const index = this._getSoundIndex(args.SOUND, util);
+      if (index < 0) return 0;
+      const target = util.target;
+      const sprite = util.target.sprite;
+
+      const soundId = sprite.sounds[index].soundId;
+      const soundPlayer = sprite.soundBank.soundPlayers[soundId];
+
+      if (!soundPlayer.isPlaying) {
+        soundCategory._addWaitingSound(target.id, soundId);
+        sprite.soundBank.playSound(util.target, soundId);
+      }
+
+      if (!soundPlayer.outputNode) return;
+      soundPlayer.outputNode.loop = true;
+    }
+
+    stopLooping(args, util) {
+      const index = this._getSoundIndex(args.SOUND, util);
+      if (index < 0) return false;
+      const sprite = util.target.sprite;
+
+      const soundId = sprite.sounds[index].soundId;
+      const soundPlayer = sprite.soundBank.soundPlayers[soundId];
+
+      if (!soundPlayer.outputNode) return;
+      soundPlayer.outputNode.loop = false;
+    }
+
+    isLooping(args, util) {
+      const index = this._getSoundIndex(args.SOUND, util);
+      if (index < 0) return false;
+      const sprite = util.target.sprite;
+
+      const soundId = sprite.sounds[index].soundId;
+      const soundPlayer = sprite.soundBank.soundPlayers[soundId];
+
+      if (!soundPlayer.outputNode) return false;
+      return soundPlayer.outputNode.loop;
+    }
+
+    stopSound(args, util) {
+      const index = this._getSoundIndex(args.SOUND, util);
+      if (index < 0) return 0;
+      const target = util.target;
+      const sprite = target.sprite;
+
+      const soundId = sprite.sounds[index].soundId;
+      const soundBank = sprite.soundBank;
+      soundBank.stop(target, soundId);
+    }
+
+    pauseSounds(args, util) {
+      this._toggleSoundState(args, util, true);
+    }
+
+    resumeSounds(args, util) {
+      this._toggleSoundState(args, util, false);
+    }
+
+    _toggleSoundState(args, util, state) {
+      const sprite = util.target.sprite;
+      const audioContext = sprite.soundBank.audioEngine.audioContext;
+
+      if (state) {
+        audioContext.suspend();
+        return;
+      } else {
+        audioContext.resume();
+        return;
+      }
+    }
+
+    isSoundPlaying(args, util) {
+      const index = this._getSoundIndex(args.SOUND, util);
+      if (index < 0) return false;
+      const sprite = util.target.sprite;
+
+      const soundId = sprite.sounds[index].soundId;
+      const soundPlayers = sprite.soundBank.soundPlayers;
+      return soundPlayers[soundId].isPlaying;
+    }
+
+    attributeOfSound(args, util) {
+      const index = this._getSoundIndex(args.SOUND, util);
+      if (index < 0) return 0;
+      const sprite = util.target.sprite;
+
+      const sound = sprite.sounds[index];
+      const soundId = sound.soundId;
+      const soundPlayer = sprite.soundBank.soundPlayers[soundId];
+      const soundBuffer = soundPlayer.buffer;
+
+      switch (args.ATTRIBUTE) {
+        case "length":
+          return Math.round(soundBuffer.duration * 100) / 100;
+        case "channels":
+          return soundBuffer.numberOfChannels;
+        case "sample rate":
+          return soundBuffer.sampleRate;
+        case "dataURI":
+          return sound.asset.encodeDataURI();
+      }
+    }
+
+    getSoundEffect(args, util) {
+      let target = Scratch.vm.runtime.getSpriteTargetByName(args.TARGET);
+      if (args.TARGET === "_myself_") target = util.target;
+      if (args.TARGET === "_stage_") target = runtime.getTargetForStage();
+      const effects = target.soundEffects;
+      if (!effects) return 0;
+      return effects[args.EFFECT];
+    }
+
+    setProjectVolume(args) {
+      const value = Scratch.Cast.toNumber(args.VALUE);
+      const newVolume = this._wrapClamp(value / 100, 0, 1);
+      runtime.audioEngine.inputNode.gain.value = newVolume;
+    }
+
+    changeProjectVolume(args) {
+      const value = Scratch.Cast.toNumber(args.VALUE) / 100;
+      const volume = runtime.audioEngine.inputNode.gain.value;
+      const newVolume = Scratch.Cast.toNumber(
+        Math.min(Math.max(volume + value, 1), 0)
+      );
+      runtime.audioEngine.inputNode.gain.value = newVolume;
+    }
+
+    getProjectVolume() {
+      const volume = runtime.audioEngine.inputNode.gain.value;
+      return Math.round(volume * 10000) / 100;
+    }
+
+    /* Utility Functions */
+
+    _getSoundIndex(soundName, util) {
+      const len = util.target.sprite.sounds.length;
+      if (len === 0) {
+        return -1;
+      }
+      const index = this._getSoundIndexByName(soundName, util);
+      if (index !== -1) {
+        return index;
+      }
+      const oneIndexedIndex = parseInt(soundName, 10);
+      if (!isNaN(oneIndexedIndex)) {
+        return this._wrapClamp(oneIndexedIndex - 1, 0, len - 1);
+      }
+      return -1;
+    }
+
+    _getSoundIndexByName(soundName, util) {
+      const sounds = util.target.sprite.sounds;
+      for (let i = 0; i < sounds.length; i++) {
+        if (sounds[i].name === soundName) {
+          return i;
+        }
+      }
+      return -1;
+    }
+
+    _wrapClamp(n, min, max) {
+      const range = max - min + 1;
+      return n - Math.floor((n - min) / range) * range;
+    }
+
+    _getTargets() {
+      let spriteNames = [
+        { text: "myself", value: "_myself_" },
+        { text: "Stage", value: "_stage_" },
+      ];
+      const targets = Scratch.vm.runtime.targets
+        .filter((target) => target.isOriginal && !target.isStage)
+        .map((target) => target.getName());
+      spriteNames = spriteNames.concat(targets);
+      return spriteNames;
+    }
+  }
+
+  Scratch.extensions.register(new SoundExpanded());
+})(Scratch);
diff --git a/extensions/extensions.json b/extensions/extensions.json
index 6d01b2f638..1d4574d9d0 100644
--- a/extensions/extensions.json
+++ b/extensions/extensions.json
@@ -33,6 +33,7 @@
   "XeroName/Deltatime",
   "ar",
   "encoding",
+  "Lily/SoundExpanded",
   "Lily/TempVariables2",
   "Lily/MoreTimers",
   "clouddata-ping",