MAKE: Blog: HOW TO - Make a TRAXMOD - SD card MOD player
http://www.makezine.com/blog/archive/2006/08/how_to_make_a_traxmod_sd_card.html?CMP=OTC-0D6B48984890
"Here's a DIY MOD player you can build (MOD is sorta like a MP3, popular in the 80's with Amiga computers)"