Has anyone added the capability to hook an MP3 player to the Nav/Monsoon system in an H3? I'd like to do this using a cable adapter rather than an FM adapter. Not looking to use MP3 CD's either. I read on one GM site that:

"The PMPC (Portable Music Player Cable) is compatible with any MP3 player, CD player, or other device equipped with an audio output jack, and allows you to listen to your music through your vehicle's speakers. GM vehicles equipped with a PMPC interface have an auxiliary input jack located on the lower right side of the radio faceplate."

No aux. jack in the face of my unit. Don't think this is for my MY or model.