CD Changer in glovebox

[mart_dev]

Hi all. My car's CD changer has become almost unusable (often jams disks half in/half out when loading or ejecting - sometimes requires me having to remove disks manually by stripping the unit).
Long story short; Are there any aftermarket units available that plug directly into the harness and interface with the iDrive and steering mounted controls?..other than this product manufactured by Alpine - Genuine BMW Ipod/iphone Interface Adapter - E60 E63 E65 E70 E71 - Turner Motorsport
I ask because If possible I would rather not pigeonhole myself by installing a manufacture specific device (in this case iPod). USB, possibly with SIM/microSIM compatibility seems to make more practical sense, or at least it does to me.

Thanks in advance