It's all very iPod-centric in the world of MP3 players, but then as the iconic Apple player commands over 80% of the market, it's not hard to see why.
If you're after something for an alternative player, then you'll be looking to utilise the line-in connection on these docks - nearly all of them will have them.
Our current budget recommendation is the Logitech mm50, but the market is packed full with options. Others worth checking out include the Saitek iVenture A-200, the Altec Lansing inMotion IM4 and the JBL Encounter.