How about this one guys? I think this is even better. Use it with your ipod adapter and only plug in the Receiver. Then instead of just hearing the music and having to control it from the ipod or iphone, you can actually completely control the music from the iDrive display as you would if it were plugged in directly.
http://www.amazon.com/iSkin-CERULEAN...I1EBMFZX3FMGAQ