3-series and Ipod

[skiba]

Just picked up my 330d this weekend, 2000 and liking it very much so far. It's got the cassete BMW business radio with multi-changer but the Harman-Kardon speakers but i'd like to use my ipod instead. I've seen one online that plugs into the multichanger input and lets you control it from the radio etc. Has anyone had any experience with these or have any good ideas?
Cheers

 

[skiba]

Both sound good, I like the idea of the display but I think the Dension displays on the radio so I don't need an extra screen right? Also I don't want to fit anything myself so need to be able to get it done at my local audio fitter.