I have looked through previous threads and seen people talk about adapters that you can buy to control an iPod via your OEM HU like the Neo and the USA Spec adapters. I have an Archos AV500 MP3 player which I think is much better than an iPod. Is anyone aware of adapters like the ones mentioned above that will control MP3 players other than the iPod via the HU controls? I know there are options for me to at least connect my MP3 player to the HU, but I would like to find one that gives me use of the HU controls.

Any help would be appreciated.