The Audio Player can play most common Audio formats (mp3, wav, snd, midi, wma, etc. extensions), as well as Audio CDs.  The appearance of the Audio Player can be toggled on/off via a button on Liquib Tools, from the Popup Menu or by just typing M.

The currently active Audio file or CD track is shown in the upper caption, colored according to the source:  Yellow for an Audio file chosen with the Select button, Blue for Audios from the active Play Directory or Green for CD tracks.  When the Random option is enabled, Play Directory Audio files or CD Tracks are played in random sequence, rather than sequentially.  The Left and Right arrow buttons will switch to the Previous and Next Audio file or CD Track when applicable.  Just hit the Space Bar to pause/resume playing.  The Automatic Effects Configuration screen contains options for controlling the Audio Player during Automatic Effects.