Just noticed sansa have released new firmware version for America, Israel and Europe.. Released 26/02/2008
v 1.01.07
now with some European versions (1.01.07F) they have now enabled the FM radio, so arguably you dont have to go searching for non European versions of the firmware to get the FM Radio to work on the sansa..
However if you are prompted to download such firmware!! Dont!!!! the downside is Rockbox Does not work with this version of the firmware.. The current sansapatcher fails to patch the bootloader so therefore Rockbox will not boot.
anyway I rolled back... so if anyone does update in error rollback to either of the following sansa firmwares, as well as being able to use the sansapatcher this will also enable The FM radio to anyone who has a sansa player with the fm chip, the ones released after December 2006 (i'm, led to beleive)
Download version 1.01.00 from here
http://files.zefie.com/PMP/sansa/c200/firmware/1.01.00/