Free media jukebox & music manager for serious music collectors. It has a CD Ripper supporting Freedb, mp3 player (plays CDs, WMA and OGG files), audio converter (for OGG, WMA, & MP3 conversion), tag editor, music playlist editor, file ren...
Foobar2000 is an advanced audio player for the Windows platform. Some of the basic features include full unicode support, ReplayGain support and native support for several popular audio formats.
aTunes is a full-featured audio player and organizer. Currently plays mp3, ogg, wma, wav, mp4 and radio streaming, allowing users to easily edit tags, organize music and rip Audio CDs.
Winamp, the ultimate media player, allows you to manage and play audio and video files, rip and burn CDs, enjoy free music, access and share your music and videos remotely, and sync your music to your iPod , Creative, and Microsoft Plays...
I've tried them all. The best out of the box music player on the market. It autosearches for lyrics and album art, integrates online radio, and even tags unlabeled files by analyzing the sound signature. You can see the biography of the artist automatically or find the wikipedia page. Best of all, you don't need to tinker with it to get all these features. It now manages my 36000+ music library.