foobar2000

foobar2000 is an advanced freeware audio player for the Windows platform.

Main features:
* Supported audio formats include: MP3, MP4/M4A, CD Audio, WMA, Vorbis, Opus, FLAC, WavPack, WAV, AIFF, Musepack.
* Gapless playback.
* Advanced tagging capabilities.
* ReplayGain support.
* Customizable keyboard shortcuts.