Airtime Pro supports playback of MP3, Ogg Vorbis, AAC (m4a), FLAC, and MP2 audio files. You can upload any of these file types to your library.
Airtime can broadcast streaming MP3, OGG, FLAC, AAC and Opus to an Icecast or Shoutcast server (44100 Hz, Stereo or Mono). If you want to broadcast in AAC+ or Opus, some additional adjustments will be required. Each of your output streams can be set to a different output format, if you so choose. MP3 is the most common output stream type.