Update README with remote stream relay feature documentation

- Added remote stream relay to features list
- Added usage instructions for remote relay
- Added troubleshooting section for relay issues

README.md

@@ -13,6 +13,7 @@ It supports:
 - Real-time visual spectrum analyzer for listeners
 - Optional password protection for the DJ panel
 - Compatibility with reverse proxies like Cloudflare
+- **Remote stream relay**: Relay live streams from other DJ servers to your listeners
 
 ---
 
@@ -134,6 +135,17 @@ You should see output like:
    - Or download from URLs (paste into deck input / download controls)
 4. Open the streaming panel and click **START BROADCAST**
 
+### Remote Stream Relay
+
+TechDJ can relay live streams from other DJ servers:
+
+1. Open the DJ Panel: `http://localhost:5000`
+2. Click the streaming panel (📡 LIVE STREAM)
+3. In the "Remote Stream Relay" section, paste a remote stream URL (e.g., `http://remote.dj/stream.mp3`)
+4. Click **START RELAY**
+5. Your listeners will receive the relayed stream
+6. Click **STOP RELAY** to end the relay
+
 ### Listener workflow
 
 1. Open the Listener Page:
@@ -241,6 +253,14 @@ Example Cloudflare page rule:
 
 - Ensure the listener page is loaded and audio is enabled.
 - Check browser console for errors related to Web Audio API.
+
+### Remote relay not working
+
+- Ensure the remote stream URL is accessible and returns valid audio
+- Check that `ffmpeg` is installed and can handle the remote stream format
+- Verify the remote stream is MP3 or a format supported by ffmpeg
+- Check server logs for ffmpeg errors when starting the relay
+
 ### `pip` missing inside venv
 
 Some Python installs create venvs without pip. Fix: