I'm sorry Sander, what I really meant is a really small Mp3-player with a size like a Minidisc- or CD-player.
These players are as far as I know brandnew and can be layed on your keyboard if you want (that's the big reason why I want such a player).
Creating playlists is very easy if you connect a player via USB to a PC.
So is there anybody who uses such a player?