diff --git a/extensions/sound.js b/extensions/sound.js
new file mode 100644
index 0000000000..31d00cbe14
--- /dev/null
+++ b/extensions/sound.js
@@ -0,0 +1,187 @@
+(Scratch => {
+  'use strict';
+
+  const audioEngine = Scratch.vm.runtime.audioEngine;
+
+  const fetchAsArrayBufferWithTimeout = (url) => new Promise((resolve, reject) => {
+    const xhr = new XMLHttpRequest();
+    let timeout = setTimeout(() => {
+      xhr.abort();
+      throw new Error('Timed out');
+    }, 5000);
+    xhr.onload = () => {
+      clearTimeout(timeout);
+      if (xhr.status === 200) {
+        resolve(xhr.response);
+      } else {
+        reject(new Error(`HTTP error ${xhr.status} while fetching ${url}`));
+      }
+    };
+    xhr.onerror = () => {
+      clearTimeout(timeout);
+      reject(new Error(`Failed to request ${url}`));
+    };
+    xhr.responseType = 'arraybuffer';
+    xhr.open('GET', url);
+    xhr.send();
+  });
+
+  /**
+   * @type {Map<string, {sound: AudioEngine.SoundPlayer | null, error: unknown}>}
+   */
+  const soundPlayerCache = new Map();
+
+  /**
+   * @param {string} url
+   * @returns {Promise<AudioEngine.SoundPlayer>}
+   */
+  const decodeSoundPlayer = async (url) => {
+    const cached = soundPlayerCache.get(url);
+    if (cached) {
+      if (cached.sound) {
+        return cached.sound;
+      }
+      throw cached.error;
+    }
+
+    try {
+      const arrayBuffer = await fetchAsArrayBufferWithTimeout(url);
+      const soundPlayer = await audioEngine.decodeSoundPlayer({
+        data: {
+          buffer: arrayBuffer
+        }
+      });
+      soundPlayerCache.set(url, {
+        sound: soundPlayer,
+        error: null
+      });
+      return soundPlayer;
+    } catch (e) {
+      soundPlayerCache.set(url, {
+        sound: null,
+        error: e
+      });
+      throw e;
+    }
+  };
+
+  /**
+   * @param {string} url
+   * @param {VM.Target} target
+   * @returns {Promise<boolean>} true if the sound could be played, false if the sound could not be decoded
+   */
+  const playWithAudioEngine = async (url, target) => {
+    const soundBank = target.sprite.soundBank;
+
+    /** @type {AudioEngine.SoundPlayer} */
+    let soundPlayer;
+    try {
+      const originalSoundPlayer = await decodeSoundPlayer(url);
+      // @ts-expect-error
+      soundPlayer = originalSoundPlayer.take();
+    } catch (e) {
+      console.warn('Could not fetch audio; falling back to primitive approach', e);
+      return false;
+    }
+
+    soundBank.addSoundPlayer(soundPlayer);
+    await soundBank.playSound(target, soundPlayer.id);
+
+    delete soundBank.soundPlayers[soundPlayer.id];
+    // @ts-expect-error
+    soundBank.playerTargets.delete(soundPlayer.id);
+    // @ts-expect-error
+    soundBank.soundEffects.delete(soundPlayer.id);
+
+    return true;
+  };
+
+  /**
+   * @param {string} url
+   * @param {VM.Target} target
+   * @returns {Promise<void>}
+   */
+  const playWithAudioElement = (url, target) => new Promise((resolve, reject) => {
+    // Unfortunately, we can't play all sounds with the audio engine.
+    // For these sounds, fall back to a primitive <audio>-based solution that will work for all
+    // sounds, even those without CORS.
+    const mediaElement = new Audio(url);
+
+    // Make a minimal effort to simulate Scratch's sound effects.
+    // We can get pretty close for volumes <100%.
+    // playbackRate does not have enough range for simulating pitch.
+    // There is no way for us to pan left or right.
+    mediaElement.volume = target.volume / 100;
+
+    mediaElement.onended = () => {
+      resolve();
+    };
+    mediaElement.play()
+      .then(() => {
+        // Wait for onended
+      })
+      .catch((err) => {
+        reject(err);
+      });
+  });
+
+  /**
+   * @param {string} url
+   * @param {VM.Target} target
+   * @returns {Promise<void>}
+   */
+  const playSound = async (url, target) => {
+    try {
+      const success = await playWithAudioEngine(url, target);
+      if (!success) {
+        return await playWithAudioElement(url, target);
+      }
+    } catch (e) {
+      console.warn(`All attempts to play ${url} failed`, e);
+    }
+  };
+
+  class Sound {
+    getInfo() {
+      return {
+        // 'sound' would conflict with normal Scratch
+        id: 'notSound',
+        name: 'Sound',
+        blocks: [
+          {
+            opcode: 'play',
+            blockType: Scratch.BlockType.COMMAND,
+            text: 'start sound from url: [path]',
+            arguments: {
+              path: {
+                type: Scratch.ArgumentType.STRING,
+                defaultValue: 'https://extensions.turbowarp.org/meow.mp3'
+              }
+            }
+          },
+          {
+            opcode: 'playUntilDone',
+            blockType: Scratch.BlockType.COMMAND,
+            text: 'play sound from url: [path] until done',
+            arguments: {
+              path: {
+                type: Scratch.ArgumentType.STRING,
+                defaultValue: 'https://extensions.turbowarp.org/meow.mp3'
+              }
+            }
+          }
+        ]
+      };
+    }
+
+    play({ path }, util) {
+      playSound(path, util.target);
+    }
+
+    playUntilDone({ path }, util) {
+      return playSound(path, util.target);
+    }
+  }
+
+  Scratch.extensions.register(new Sound());
+})(Scratch);
diff --git a/images/README.md b/images/README.md
index e854f9e684..f4911852df 100644
--- a/images/README.md
+++ b/images/README.md
@@ -40,3 +40,6 @@ Created by @David-Orangemoon in https://github.com/TurboWarp/extensions/issues/9
 
 ## utilities.svg
 Created by @David-Orangemoon in https://github.com/TurboWarp/extensions/issues/90#issuecomment-1367709835. The font is Deja Vu Sans.
+
+## sound.svg
+Created by @softedco in https://github.com/TurboWarp/extensions/issues/90#issuecomment-1369138404.
diff --git a/images/sound.svg b/images/sound.svg
new file mode 100644
index 0000000000..58aa7f4b58
--- /dev/null
+++ b/images/sound.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="600" height="300"><path fill="#0fbd8c" d="M0 300V0h600v300z" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0"/><path fill="#fff" d="M192.22 150c0-59.525 48.255-107.78 107.78-107.78S407.78 90.475 407.78 150 359.525 257.78 300 257.78 192.22 209.525 192.22 150z" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/><path fill="#0fbd8c" d="M212.632 150c0-48.252 39.116-87.368 87.368-87.368 48.252 0 87.368 39.116 87.368 87.368 0 48.252-39.116 87.368-87.368 87.368-48.252 0-87.368-39.116-87.368-87.368z" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/><path fill="#fff" d="M226.876 150c0-40.385 32.739-73.124 73.124-73.124s73.124 32.739 73.124 73.124-32.739 73.124-73.124 73.124-73.124-32.739-73.124-73.124z" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/><path fill="#0fbd8c" d="M188.3 280.306V19.694h130.068v260.612Z" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/><path fill="#0fbd8c" d="M248.363 150c0-28.519 23.118-51.637 51.637-51.637 28.519 0 51.637 23.118 51.637 51.637 0 28.519-23.118 51.637-51.637 51.637-28.519 0-51.637-23.118-51.637-51.637z" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/><path fill="#fff" d="M192.74 158.144v-43.666h52.677l53.717-53.717v98.076z" data-paper-data="{&quot;index&quot;:null}" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/><path fill="#fff" d="M299.134 139.776v98.077l-53.717-53.717H192.74V140.47Z" data-paper-data="{&quot;index&quot;:null}" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/><path fill="#fff" d="M274.008 150c0-14.355 11.637-25.992 25.992-25.992s25.992 11.637 25.992 25.992-11.637 25.992-25.992 25.992-25.992-11.637-25.992-25.992z" style="mix-blend-mode:normal;fill-rule:nonzero;stroke-linejoin:miter;stroke-miterlimit:10;stroke-dasharray:none;stroke-dashoffset:0" transform="translate(1.96)"/></svg>
\ No newline at end of file
diff --git a/website/index.ejs b/website/index.ejs
index 1111024cba..6341118ecc 100644
--- a/website/index.ejs
+++ b/website/index.ejs
@@ -326,6 +326,13 @@
           <p>Advanced rendering capabilities.</p>
           <%- url('penplus') %>
         </div>
+
+        <div class="extension">
+          <img loading="lazy" src="<%= img('sound') %>">
+          <h2>Sound</h2>
+          <p>Play sounds from URLs.</p>
+          <%- url('sound') %>
+        </div>
       </div>
     </div>
 
diff --git a/website/meow.mp3 b/website/meow.mp3
new file mode 100644
index 0000000000..45742d5ef6
Binary files /dev/null and b/website/meow.mp3 differ