Sonique is a discontinued Windows freeware audio player capable of handling MP3, Ogg Vorbis, Microsoft Windows Media, audio CDs, and more. It fuses a highly stylized aesthetic with a fluid, windowless interface and fully animated menu systems. Additional functionality includes a basic playlist editor, a variety of unique output visualization modes via plug-ins, and a robust control set featuring pitch, balance and amplification adjustment, as well as a 20-band equalizer with spline-based level adjustment. It supports many audio formats, including MP3, MP2, Ogg Vorbis, WAV, MOD, XM, IT, S3M, Audio CD and Windows Media Audio. Further audio and visual formats are playable through various plugins, for example AVI video files. Sonique can also be used to listen to audio streams.

At the time when Sonique was still under development, it was one of the most popular audio players, though had very stiff competition in Nullsoft's Winamp audio player. The major features that made Sonique famous were its audioEnlightenment mpeg decoding engine by Tony Million, its freeform skins, innovative audio visualizations, and a powerful equalizer.

• Sonique's look and feel can be completely customized via skins.
• Play Ogg Vorbis, MP3, and WAV sound files.