Belkin has announced the release of their latest FM transmitter for the iPhone and iPod touch, the TuneCast Auto Live. You know these things — they plug into your iPhone or iPod touch’s dock connector, and then send a local FM signal out to your car’s radio, enabling wireless transmission of your music or podcasts. I’ve got a Belkin transmitter already (the TuneCast Auto — more on that in a second), but I’m interested in this new one, because it can be used with a free iPhone app [iTunes link] that will actually use your iPhone’s GPS information to find a good station for you right away.

That seems helpful — my current issue with my Belkin is that here in Los Angeles, where the radio stations are almost as thick as the fast food joints, I can’t seem to find a solid station to keep it on that’s clear enough to actually listen to. If you’re in a busy urban area, there’s so many signals flying around that these transmitters are more or less useless. I don’t know if the GPS app would help me (seems like I’d have to keep changing the car’s station while I move even if I could find a clear signal here in the city), but if you’re in the market for an FM transmitter and are in a place with a little more room on the radio dial, the $79.99 TuneCast is as good a choice as any. As for me, I’ll probably go for an aux hookup straight into my dash the next time I have some car audio upgrade money.