i will be traveling this summer, and attending a location that will be broadcasting an event over a low power FM radio signal so that you can listen over a person radio with headphones. i know that the iphone does not have a built in FM receiver, and that i will need to purchase a dongle similar to the Griffin iFM connector. my question is this: are there any FM controller apps that will allow me to record the FM broadcast? i am not looking for an app that will mirror FM radio stations. i want something that will pick up an over the air signal, not an internet signal.