Apollo is a general purpose audio player for Windows

Apollo Features
Full HTML documentation
Plug-in based support for different file formats
Ships with high quality MPEG-1/2/2.5 audio layer 2/3 and RIFF WAV PCM/ADPCM decoders
Support for Winamp 2.xx plug-ins
Internet streaming
Realtime 16-band graphic equalizer for all file formats
Accurate adjustable pause between tracks (gapless play also supported)
Crossfading between tracks (also with DirectSound and WAV output)
Built-in playlist (PLS/M3U/AAP) editor with drag & drop capabilities
Apollo Advanced Playlist support
Support for ID3 and ID3v2 tags
Standard Wave Out and DirectSound support
Decode to WAV file