Every song can have an Audio Track assigned to it. The following file types are supported
If there is an Audio Track available for the selected song the Audio icon will become active. Click the icon to launch Windows Media Player to listen to the audio file.

By default a copy of the Audio file is stored in Power Music in the Application Data folder. However, if required, only a pointer to the Audio file, which is held in another location, can be used.
It is easy to assign an audio file to a song using the Song Editor.