Using an IPod with the FM modulator, you can play your tunes using the FM stereo. Stash or velcro the IPod in the trunk and use the internal batteries (over 8 hours play time with 3 hour recharge time) or route DC to the trunk and use the car power adapter (you will need to add a lighter socket). Depending on your IPod, you have 10, 20, or 40 Gig of storage. With over 25 minutes of skip protect time, this is a nice alternative to CD or MP3 player as in this configuration, you can use unit in car on trips also.
http://www.apple.com/ipod/:rockon: :rockon: :rockon: :rockon: :rockon: