Ding-Kyoma / AirFlash

# AirFlash
 English ·
 简体中文 
AirFlash supports existing two-device stereo pairs and low-latency playback from Windows.
Stream Windows desktop audio to HomePod through a native AirPlay 2 sender,
with support for HomePod OS 27.
AirFlash is an AirPlay 2 alternative to TuneBlade (AirPlay 1), designed to bring
Windows audio streaming to HomePods running newer versions of HomePod software.
## Installation
Download the latest release from GitHub Releases, run
`AirFlash-X.Y.Z.msi`, and launch AirFlash from the installed shortcut. Apps and Features provides repair and uninstall.
The minimum target is **Windows x64, Windows 10 1809 / build 17763** (LTSC 2019),
including LTSC 2021, 22H2 and Windows 11. Windows 10 qualification is pending
affected-user testing. See Windows compatibility and startup diagnostics
for the candidate status and the PowerShell 5.1 diagnostic collector.
AirFlash is distributed as a Windows x64 executable and standalone MSI. Windows may show
a SmartScreen warning because release binaries are not code-signed. Use
**More info** and **Run anyway** only when the downloaded files are from a
source you trust.
For audio capture, we recommend **Settings > Audio capture > Specific audio endpoint**.
If you do not have an unused audio endpoint available, install a virtual endpoint
with Virtual Audio Cable (VAC Lite)
or a similar tool, and route the audio you want to stream to that endpoint.
## Key features
- Streams Windows system audio to HomePod over AirPlay 2.
- Supports synchronized playback on existing two-device HomePod stereo pairs.
- Adds experimental two-receiver software stereo groups, independent hardware volume,
 per-receiver PCM/ALAC and UDP/TCP profiles, and 5 ms continuity transitions.
- Offers automatic device discovery, PIN pairing, and manual device setup.
- Lets you filter device discovery by selecting a network adapter in Settings.
- Includes selectable latency modes, tray operation, mute restoration,
 automatic reconnection, and connection diagnostics.
- Provides a ten-band equalizer with presets and live preview in Settings.
- Captures a selected application or playback/recording endpoints, including virtual audio devices.
- Releases AirPlay sessions after configurable silence and reconnects when audio returns.
- Available as a portable Windows x64 app with English, Simplified Chinese, Traditional Chinese, and German UI.
## Feature plan
See audio continuity and schema v4 for setup, protocol details,
simulation results and remaining hardware acceptance. Samsung, Mac and mixed-brand
playback and acoustic synchronization have not been qualified by this implementation.
- [ ] Dolby Atmos support.
## Usage
1. Connect the PC and both HomePods to the same reachable local network.
2. Start AirFlash and wait for the receiver list to populate.
3. Select the complete `HomePod stereo · 2/2` entry and press play.
4. Complete PIN pairing in **Settings > Receivers** if the receiver requests it.
5. Choose the capture endpoint and latency p