nav, we can start a new thread...
there are some things you can do
the power to the xm tuner, needs to be ON when the pc is on
i dont know what connections the mp3 usb adaptor has
but make sure its powered with pc , NOT IGNITION..
now since its FTDI based, i bet its using OLD drivers, i dont know if mp3car has updated them, i could do it for you
also... do you have any resume delay set?, this gives USB devices more time to get back in play after a resume
in rr.ini resumedelay=xxx (where xxx = 0 to 10sec) or in RRCONFIG page 3
and i assume you have rr hibernation aware...