Whats this addon called

[Limb0]

I use "SimpleMP3 Player 2009" which is over on curse. Pretty much you grab the songs you want, throw em into the MP3 folder of the addon, then run a bat file much like enabling SharedMedia_MyMedia files.

A search of "MP3" there also brings up the Titan Panel display, though there's already a general hideable one provided. Keybinds are also possible.