Why buy when you can build? Sure, they have slick interfaces, nifty looks, warranties (who needs ’em?) and stuff like that but just think of the pride you can show when someone asks you what that ‘thing’ is your listening to is? (Ok, just as a suggestion, don’t house it in a coconut or a old Ronsonol can)
The Super-Simple pocket size mp3 player
Yampp7
MintyMP3
PJRC MP3 Player