SRC is the button you are looking for. It used to work in the 1.x series, both with the steering wheel remote and the handheld non creditcard remote.

It's been reported as a bug in 2.03b a couple of times, in a couple of places, however, no one on the Empeg team has positively confirmed that it's a FITNR or even in the database.

So rather than ask for them to add functionality in the next release, I'm just hoping that the existing functionality will return.

Of course, SRC toggled through ALL of the states, from player to aux, to FM to am and then back to player.