I tried the new flycast native app for the iPhone, and am quite happy with it. I've marked RP as my one and only favourite station. It displays cover art and track info as the music plays in the background (make sure you enable background play in settings).

Another plus for folks on the move with intermittent signal is that it buffers a couple of minutes of music so your stream is rarely interrupted (like it would if you used safari with the RP stream).

http://flytunes.fm

I posted the following in Howard Forums this morning (the italicized part was my earlier post there):

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Motorola T505

(click here)
We'll see how it works — my goal is to be able to listen to things like internet radio, my HTPC's music, or XM in the car.  Being able to answer calls sans a headset will be nice, too.

...I just had one of those rare (for a geek like me) "living in the future" moments.  I drove to work while I listening to my favorite internet radio station on my car's sterero via the LG Dare and the T505. 

First, re: the bluetooth part, the two paired up perfectly, and both the phone and music controls work perfectly.  For music on the Dare itself, all I have to do is press play on the T505, and it automatically starts playing everything on the phone in shuffle mode.  Nice.  Alternatively, you can pick something specific on your phone and play that instead.

Re: the FM connection, press the connect button and it audibly tells you which frequency to tune your radio to.  If the signal strength changes during your drive (it didn't on my short commute), you press it again and it'll search for another, clearer freq.  There was only a little static, which I'm sure I could improve by placing the transmitter closer to my car's antenna (located in the back window) since I plan on mainly using it for music, not for calls.

About calls, though, that too worked well.  I called my fiancee and she said I sounded very clear.  She sounded great too, of course, coming through six speakers. :) 

Overall, I'm really happy with it. 
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Bill, are there any plans for a higher bitrate version of the mobile stream?  I think most folks' phones could handle 64k or 128k streams, too. 

Oh and Servo, while I agree with you, I'll take the convenience of being wireless over higher fidelity at this point.  Plus, the acoustic environment of a car doesn't lend itself to very high quality music anyway.  (I still wouldn't mind a higher bitrate stream though, like I said. ).