I dunno if anyone here is good enough to know, but it's worth giving a
shot... I stumbled on a website
(http://mikroelektronika.co.yu/englis.../chapter4a.htm
)on how radios work, and how they can be made with various IC parts, I
studied the IC parts in question (via datasheets and stuff), and came
up with a plan for a radio that runs in stereo on both bands:

http://i9.photobucket.com/albums/a77/Rover_Wow/AMFM.png

I know the voltage is sound (4.5-6.0 V), but how good would it work,
and how much would it cost to make?