Slim Devices, Inc. makes and sells the ~$250 SliMP3 (I choose to say it ‘slimpy’) – a dedicated network port for accessing your MP3s from your home LAN.
No word on a wireless model. But it uses perl!
I guess the limitation that I see is drawn from that tiny display – paging thru 5000 songs might take some time.
From a strictly economic perspective, $250 buys a LOT of CDs to burn mixdiscs on -and your $89 DVD player does MP3, right? You geek.