If I had £1 for every time I've posted this....
You need to remove the hidden resource files..
Hidden Cleaner 2.1If you 'eject' the SD card by dropping it on to the Hidden Cleaner icon in your dock rather than the usual method, it will remove all the nasty bits you don't want and leave you with your music.
Not tried it with anything newer than Snow Leopard though..
Hope that helps
Paul.