Oh great! I´m right here!
I want to try to mod the radio section to a worldreceiver . The Radiochip in my SANSA CLIP is an Silabs 4702. maybe it is possible to replace it by a silabs 4735.
It covers also LW/MW/SW/FM stereo/RDS. here you can adjust many things for example filter bandwith.
Or silabs 4689: AM/FM/HD Radio/DAB/DAB+ Receiver w RDS but DAB/HD output stream needs to be decoded by software.
I could do soldering this stuff. f***ng small, but I can. I Build up a standalone radio with si4835. its for manual tuning by variable resistor, tuning bands switched by resistor network.
BUT- I am disabled in programming.
I try ARDUINO at the moment, but more than a temperature controler doesnt exist yet.
Would be great when someone feels pleasure to try some code . I would send my SANSA for testing.