XM Radio (Audiovox) & iPod in my Boxster = daily driver
for me both is a must:
* XM to get BBC worldwide news & Air America
* iPod when I want to listen to "my music" and to audiobooks
self-made adapter to connect iPod & XM Radio to AUX port of CDR-220
works great, BUT still fighting the "alternator whistle" (and already spend many hours and $$$ trying to get rid of id).
The good news is: my GHL is so loud that I don't hear anything anyways