Airbridge bridges DLNA/UPnP audio streams to AirPlay (RAOP) devices.

Creates virtual DLNA renderers that forward audio to AirPlay speakers, allowing media servers like Music Assistant or Plex to stream to AirPlay-only devices through DLNA.

Features:
- Virtual DLNA renderer per AirPlay zone
- Automatic AirPlay device discovery (mDNS)
- Web admin interface for managing devices
- Volume control support

Requires host network mode for mDNS device discovery and SSDP announcements.