Although the Tactile12000 plays many sound formats, the most common format to find music on the internet is the MP3 format. There are tons of sites on the net that feature MP3 files. Here are just a few places to get started.

MP3 Encoders

You can also create MP3 files from your own CDs or sound files that you have produced using MP3 encoding software. There are some free and some commercial MP3 encoders available. DailyMP3.com and the Sonic Spot keep lists of them.