I just saw @ i-hacked something... i whas reading about the ITRIP... what is a strong FM transmitter.
ok here is a pic of the ITRIP:
You see that it has a... Sound Jack and a Data Jack.
If you look to the psp it is the same... only it has 3 line's of data and not 2 as you see with the ITRIP.
My idea whas... make the thing open and figure out how it works and build a special PSP RADIO...
Some pic's of the open ITRIP:
I hope its a good idea and it will come out with some good.