foobar2000
Free
Foobar2000 is free audio player.
Napster
Commercial
Napster is a peer-to-peer (P2P) file sharing Internet service that emphasized sharing digital audio files, typically songs, encoded in MP3 format.
Vox Music Player
Freemium
Vox is an audio player, Its purpose is to provide a lightweight yet full-featured audio player.
Compare Rhythmbox with alternatives
Compare foobar2000 and Rhythmbox and decide which is most suitable for you.
Compare Vox Music Player and Rhythmbox and decide which is most suitable for you.