I have read a few threads about installing an aux cable.
I have the dsp and satnav option with Bluetooth hands free and would like to know if I can install an aux cable without loosing any of the other options?
I did this with mine, also have dsp/satnav (but no bluetooth).
I believe the wires/plug you replace for the aux connection are where the CD changer would go, so if you don't have/use this then you won't lose any other features.