How to Play Local Audio Files on Your Computer Through Sonos

Learn how to stream local audio files from your PC or laptop to your Sonos speakers using the Cast to Sonos Chrome extension.
Published on March 20, 2025

The ** Cast to Sonos ** Chrome extension makes it easy to play local audio files from your computer to your Sonos speakers. This extension allows you to cast audio files directly to your Sonos system without needing additional apps or complex setups.

Follow this guide to stream your local audio files to your Sonos speakers easily.

Step 1: Install the Cast to Sonos Extension

  1. Go to the Chrome Web Store.
  2. Install the extension.
  3. Once installed, pin the extension for quick access.

Step 2: Drag and Drop Your Audio File into Chrome

  1. Open a new Chrome browser tab.
  2. Drag and drop your local audio file directly into the browser window.
  3. The audio file will play automatically in the browser’s built-in media player.

Step 3: Cast the Audio to Sonos

  1. Click the Chrome extensions icon (puzzle piece) in the top-right corner and select Cast to Sonos.
  2. From the extension, choose the Sonos speaker or group you want to stream to.
  3. Press the Play button in the extension to start casting the audio.

Step 4: Control Your Playback

  • Use the browser’s media player controls to pause, skip, or rewind the track.
  • Adjust the volume either from the Sonos app or the extension itself.

Video Tutorial

If you’d like to see the process in action, check out this helpful video tutorial:

Watch the video
Watch the full tutorial on YouTube

Additional Resources

For a more detailed explanation of how to cast audio from Chrome to Sonos, check out this comprehensive article on Medium:

How to Cast to Sonos from Chrome

Benefits of Using Cast to Sonos for Local Files

  • Ease of Use: No special software or servers are needed—just Chrome and the extension.
  • File Compatibility: Works with any audio file that Chrome supports, including MP3, WAV, and AAC.
  • Premium Features: Unlock high-bitrate streaming and unlimited usage with the premium version.

  • Troubleshooting Tips

  • File Not Playing? Ensure the file is in a supported format and can be opened by Chrome.
  • Audio Delay: There may be slight latency during casting, which is normal for this setup.
  • Speaker Conflicts: Make sure no other apps are using your Sonos system.

With the Cast to Sonos extension, you can bring your audio collection to life on your Sonos speakers. Whether you’re revisiting classic tracks or enjoying fresh finds, this method offers a simple and effective way to enjoy your local files in premium sound quality.

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