StreaMu v1.5.1 by imissuuuu
Searches YouTube and streams the audio to your 3DS through a small server on your PC
Install on your 3DS
Method 1Scan the QR code
With FBI (Remote Install › Scan QR Code) or 3dsDL (Scan QR Code). Either one installs it.
Method 2Send it to your 3DS
Open 3dsDL › Receive on the same Wi-Fi, then press:
Send to 3dsDL Not working?
Other ways to install
From your SD card: copy streamu.3dsx into /3ds/ and start it from the Homebrew Launcher.
Send can't find your 3DS? Type the address 3dsDL shows on Receive, then press Send.
Send to 3dsDL
Files
Screenshots
About StreaMu
A proxy server on your PC fetches the audio from YouTube and streams it to the 3DS. The recommended way to run it is StreaMu-Server.zip from the release: unzip it and run the EXE on Windows. There's also a Python version for Windows, Mac and Linux that needs Python 3.10 or newer. The server runs on port 8080 and shows a dashboard at localhost:8080 with the address the 3DS should use.
Open StreaMu, type in that address, then press Y to search. Tap a track to play it. You can save tracks to playlists, rename them, and a playlist plays as a queue. Settings cover light and dark themes, accent colours, what L and R do, and English or Japanese. They're kept in /3ds/StreaMu/config.json. PNG images in /3ds/StreaMu/wallpaper/ can be used as the top screen background.
- Y: search
- A: select
- B: back
- Select: track options
- L/R: switch tabs (can be changed)
- Start: quit
The 3DS and the PC have to be on the same Wi-Fi. If it times out, check the server is running and that Windows Firewall lets TCP port 8080 in.
Open StreaMu, type in that address, then press Y to search. Tap a track to play it. You can save tracks to playlists, rename them, and a playlist plays as a queue. Settings cover light and dark themes, accent colours, what L and R do, and English or Japanese. They're kept in /3ds/StreaMu/config.json. PNG images in /3ds/StreaMu/wallpaper/ can be used as the top screen background.
- Y: search
- A: select
- B: back
- Select: track options
- L/R: switch tabs (can be changed)
- Start: quit
The 3DS and the PC have to be on the same Wi-Fi. If it times out, check the server is running and that Windows Firewall lets TCP port 8080 in.
Release notes
v1.5.1 · StreaMu v1.5.1 · Jun 1, 2026
StreaMu v1.5.1 Release Notes
Highlights
- Improved steady-state Opus playback behavior to reduce low-FPS feeling and refill instability during playback.
- Reduced noisy hot-path observation overhead while keeping the playback pipeline changes that were validated on hardware.
- Tightened several playback and UI edge cases, including buffering state transitions, startup connection checks, and QA Remove handling.
Upgrade Notes
- Update both the 3DS app and the proxy server together.
- Replace your existing
StreaMu-Server.zipwith the version from this release. - Existing Opus Direct usage stays the same; this is a maintenance and smoothness update rather than a feature reset.
Release Assets
streamu.ciastreamu.3dsxStreaMu-Server.zip- Includes
StreaMu-Server.exe,LICENSE, andTHIRD_PARTY_LICENSES.md.
Validation
- The Opus playback tuning changes were reviewed in TAKT review runs before release preparation.
- Device testing reported no regression and no meaningful playback artifacts after the steady-state refill tuning adjustments.
- GitHub release automation rebuilds the 3DS and server artifacts from the merged
maincommit before publishing this release.