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

Main features

• Supported audio formats: MP3, MP4, AAC, CD Audio, WMA, Vorbis, Opus, FLAC, WavPack, WAV, AIFF, Musepack, Speex, AU, SND... and more with additionalcomponents.
• Gapless playback.
• Easily customizable user interface layout.
• Advanced tagging capabilities.
• Support for ripping Audio CDs as well as transcoding all supported audio formats using the Converter component.
• Full ReplayGain support.
• Customizable keyboard shortcuts.
• Open component architecture allowing third-party developers to extend functionality of the player.