Kanex Group has released MP3 Strip, a utility that can play MP3s from a Control Strip Module.
MP3 Strip enables playback and browsing through MP3 files. It's only 90Kb, and needs no other software.
The utility has been developed to work with very little memory, and shouldn't slow other applications, according to Kanex.
Features include a hierarchical, automatic album-list, and the ability to sort tracks by artist or folder name. Disks and Folders can be drag-&-dropped in to the app. It supports both constant and variable bit rate playback rates.
It requires a PowerPC and Mac OS version 8.6 or later. QuickTime 4.1 must also be installed.
MP3 Strip is available from Softwarium.com, it costs $15.