Airsonic
Free and Open Source community driven media server
..., for instance AAC and OGG. By using transcoder plug-ins, Airsonic supports on-the-fly conversion and streaming of virtually any audio format, including WMA, FLAC, APE, Musepack, WavPack and Shorten. If you have constrained bandwidth, you may set an upper limit for the bit rate of the music streams. Airsonic will then automatically re-sample the music to a suitable bit rate.