Do there exist iPod-like desktop players?

-- a non-portable, desktop MP3 player with hard disk, jukebox-like playlist
firmware, connect to any audio amp or receiver. No computer needed to play.

Does anything like this exist now? Or soon in the pipeline. It would be a
boon for disk jockeys at dances, etc. Yes I know iPod with dock can connect
with regular audio equipment, but portability has tradeoffs.

Thanks.