MP3 AUDIO

20 gig mp3 players usually have hard drive with moving parts (that wear
out).  Ours has a 1 gig memory chip built in and has no moving parts.  Ours
takes a battery that must be replaced in 8 or 10 hours of use.. some units
have Lion Lithium Ion batteries that can be recharged whenever and do not
develop a memory.  check out creative labs Zen Micro
http://www.nomadworld.com/products/Zen_Micro/.