I have made an experimental Eco CM9 release with a working FM radio: http://www.multiupload.nl/1EPZ41WTGL
The radio only works with headphones, and before you start the FM radio app, you must change the volume with the headphones on (to enforce the audio route through the headphones).
The volume and RDS are still not working..
Besides the FM radio, the ROM is stable as always, so you can install over the previous Eco CM9 versions. I just suggest to format /system, and reinstall the ROM and the Gapps package..
Edit: Oh, I almost forgot, credits to Daemond
, since I adapted his CM10 patches to CM9..
Edited by jventura, 13 March 2013 - 09:04 PM.