I installed an external Audiovox XR9 XM Radio in my Jeep, and when I use it, the audio is ONLY coming from my front speakers. When I play music through my CD player, like a cd or the normal radio, all my speakers work normally including my Sub. I have the XM Radio hooked up into my Auxillary port on my Pioneer DEH-760 CD player with a regular Monster audio cable. When my CD player is in "auxillary" mode and I'm playin the XM radio, it's also at a very low volume coming from my front speakers, and I can't control the volume with my cd player. Are there some settings in my cd player that I have to change that I'm missing? Is it the audio cable? Can I get a fix on this problem without resorting to an FM Modulator? Any Idea's?