Ok so i am hooking up everythings and had a question about sources, I got xm for that is usable and radio, aux, ipod, and cd are are selectabale and i know if ne external device is available then you can touch it but anyway heres the real question

What would be considered external on my N3, the only stuff i could would be the bluetooth which says it not compatible. just a question i had, im trying to make this thing so blingy so i can justify it to the wife.

i would think anything that is not the brain, and u have to plug in into the brain, would be considered external

i understand its an external source, but what other than a tv tuner can you install, i mean external cd players wether single or multi already have a button. when i had my old pioneer 930 the xm was considered external but now its got its own button, just trying to make this thing as mack daddy as possible.