as someone modded the wormlight, i think the radio works on similar system due to all it's components and stuff are on the radio, not on the GBA, ti even comes with headphones
only thing it would do is just have a radio attached to the bottom, drainging battery power
well considering you can buy mini radios from the gadget shop which are smaller than your palm, with headphones - for £5 - can't see the point AT ALL on the gp....
i have one - fits in the gp case nicely - FM radio in the ears, games on the gp - no compromise that way
edit - TV OUT - now we're talking, that would be superb - same resolution etc.. would look good