This type of thing would not typically be done in the kernel. The kernel is only supposed to contain the operating system's code for dealing with devices and running programs and such.

A "scan" function really belongs in the player software, so you want to post in the Wish List forum. However, this has already been asked for, and the Empeg guys know people want it. One of the problems is there aren't many remote buttons left over to be reserved for such a function... If you post this request in the Wish List forum, it has a better chance of getting read by someone who can do something about it.

You *can* currently "seek" to the next strong signal by holding down the left/right buttons on either the front panel or the remote. So, it would *technically* be possible to implement this in the kernel by having a special button defined which the kernel knows about, and then sends a "hold down left/right button" code to the player every 5 seconds until you hit that button again. However, that's not where this kind of functionality belongs, and it'd be a real clumsy hack compared to a properly-written scan function in the player software.