iTunes-compatible DAAP Server

Firefly Media Server (formerly mt-daapd) is an open-source audio media server
(or daemon) for the Roku SoundBridge and iTunes. It serves media files using
Roku Server Protocol (RSP) and Digital Audio Access Protocol (DAAP). It
supports server-side transcoding and other advanced features.

WWW: https://sourceforge.net/projects/fireflyserver-server/