Streaming audio from a Windows PC to a Chromecast or Google Nest speaker isn't as straightforward as casting a YouTube video — but it is possible. Many users look for ways to cast desktop audio only or to send all system sound wirelessly to their speakers without video lag or complex setups.
In this guide, we'll walk through the methods available, explain how Chromecast handles audio, compare tools (including alternatives to AirParrot), and share setup and troubleshooting tips. Let's get your PC sound playing on your Chromecast device.
What Does Casting PC Audio to Chromecast Mean?
Chromecast and Google Nest devices use the Google Cast protocol — a system that lets compatible sources send media to speakers and displays on your network. Chromecast is designed to receive audio or video streams from supported apps, mobile devices, or browsers.
Chromecast typically expects media to come from:
- Cast-enabled apps or services (e.g., YouTube, Spotify)
- Browser tabs or desktop mirroring through Chrome
- Casting tools that bridge system audio into a cast stream
Casting desktop audio only is tricky because most native options send both audio and video, which isn't ideal for pure audio or wireless speaker use.
Native Chromecast Options (No Extra Tools)
Cast from Chrome Browser
Google Chrome includes a built-in Cast feature that can send audio from Chrome tabs or the entire desktop to a Chromecast device.
Steps (Windows):
- Make sure your PC and Chromecast are on the same Wi-Fi network
- Open Google Chrome
- Click the Cast icon in the toolbar or find it via the Chrome menu (⋮ → Cast)
- Choose your Chromecast or Nest device
- Select "Cast Desktop" to include system audio
Note: Casting desktop in Chrome can include audio, but it also mirrors your screen, which may not be what users want if they only care about audio.
Why Native Casting May Not Be Enough
There are a few limitations to the built-in Chrome approach:
- Video mirroring may be forced along with audio
- Latency can be high because the entire desktop is sent and re-encoded
- Some users report that Windows won't list Chromecast as a default audio output without workarounds
This is why many people look for dedicated tools that focus only on audio from the PC to the Chromecast device.
Tools That Can Stream PC Audio to Chromecast
| Tool | Audio-Only | Windows | Latency | Cost |
|---|---|---|---|---|
| Chrome Desktop Cast | No | Yes | High | Free |
| AirParrot 3 | Yes | Yes | Medium | $28 |
| PC Nest Speaker | Yes | Yes | Low | $20 |
| VLC + Cast | Limited | Yes | High | Free |
1. Chrome Desktop Casting (Built-in)
- Pros: No software to install
- Cons: Sends video too, high latency, not audio-only
2. AirParrot 3
AirParrot is a paid tool that can stream media from Windows to Chromecast and other receivers. It supports audio and video casting.
- Pros: Simple UI, supports multiple receivers
- Cons: Paid ($28), latency can still be an issue
3. Open Source Options
There are open-source tools like ChromeCast-Desktop-Audio-Streamer that capture your PC's output and send it to Chromecast.
- Pros: Audio only, free
- Cons: Not polished, may lag, limited support
4. PC Nest Speaker (Audio-First Option)
PC Nest Speaker is built specifically for this use case: low-latency, audio-only casting from PC to Chromecast or Nest devices — no video mirroring, easy setup, and no complicated browser steps.
Step-by-Step Setup: Cast PC Audio to Chromecast
Here's a reproducible workflow using the native Chrome option (audio + desktop):
Step 1 — Connect Devices to Same Wi-Fi
Make sure both your PC and Chromecast/Nest device are on the same network. This is required for casting to work.
Step 2 — Use Chrome's Cast Feature
- Open Chrome on Windows
- Click the Cast icon in the toolbar (or navigate via the menu)
- Select Sources → Cast Desktop
- Choose your Chromecast/Nest device
Step 3 — Adjust PC Audio Settings
Check your Windows audio settings:
- Open Sound Settings
- Ensure audio is playing and at audible levels
- Some devices may mute if the output device changes
Step 4 — Test and Monitor
Play audio and make sure it's streaming correctly. Chrome will show the active cast icon when streaming.
Common Problems & Fixes
No Audio While Casting
- Make sure the cast session isn't muted in Chrome
- Check Windows sound output settings
- Restart your Chromecast device and router
Audio and Video Lag
Latency comes from video being mirrored with audio — a dedicated audio stream (like PC Nest Speaker) can reduce delay significantly.
Only Video Casts
Casting desktop from Chrome sends both video and audio; isolated audio casting isn't natively exposed unless the source app supports audio-only casting.
For more detailed troubleshooting, see our guide on how to fix audio delay when streaming to Nest speakers →
Frequently Asked Questions
Can I cast PC audio without video?
Not natively through Chrome — it sends both. Dedicated tools like PC Nest Speaker can stream audio-only to Chromecast and Nest devices.
Why is my Chromecast audio lagging?
Chromecast prioritizes buffer stability over speed. When mirroring desktop, the entire screen is encoded and sent, adding significant latency (often 5-30 seconds for Chrome casting).
Is there a free way to stream PC audio to Chromecast?
Chrome's built-in cast is free but includes video and has high latency. Open-source tools exist but are often unreliable. For consistent, low-latency audio streaming, paid tools like PC Nest Speaker ($20 one-time) are more reliable.
What's the best AirParrot alternative?
PC Nest Speaker is built specifically for Chromecast/Nest audio streaming with lower latency and a lower price ($20 vs $28). It focuses on audio rather than screen mirroring.
Summary
Casting PC audio to Chromecast or Google Nest speakers works best through dedicated tools or browser cast features. Chrome's built-in cast lets you cast desktop audio, but it may not give the pure audio experience many users want.
Tools like AirParrot or open-source audio streamers offer alternatives, and purpose-built solutions like PC Nest Speaker can provide low-latency, audio-only streaming designed specifically for Windows users.
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