It has been available in extras-testing for a while now and could use some testing and votes. Anyway:

What:

• Adds support for playing modules (tracker music) using the built in media player.
• Supports various Amiga .MOD files, ScreamTracker .S3M files, Impulse Tracker .IT files, Fast Tracker 2 .XM files and all other formats supported by modplug.
• Module title is extracted when available and all modules are put in a fake "Various Artists - Tracker modules" album with module type as genre as modules only support a title.

Available in testing.