Especially if you start to think about getting external hard drives involved - you could get into gigs and gigs of storage.
So my question is this: I want a device that does this exact thing, but instead of (or in addition to) using an FM transmitter, it has a 1/8" line out that would jack directly into the aux input of a car stereo head unit.
I've searched for 15 minutes and can't find the device. Anyone heard of this or want to hunt around for me?