Ok, which is the player that shows the screen it was left with? the empeg, or the player software?
In any case, gpsapp isn't reading the serial port while you're back in the player software, so when we get back it should still be at the location where we 'exited'.
It should reopen the serial port, and drain the buffers, and then start showing the location again.
What is auxiliary? If it is the player software doing something strange, perhaps that is because before v0.5 all the button release codes were not hijacked, so they would still get to the player software.