I don't think the BM5000 could have different options set. I think the only way to do wjhat you want is to get the IR code converter like the one I brought to King Street. The 5000 does not have an Audio Aux connection, just the CD/Aux and I don't think this has the capability of the later systems.
I don't have a 5000 here to test this though! If anyone knows differently, please post!