Aux port doesn't show; Button is Stuck
I don't know if you have figured out how to turn the AUX port on yet, but I just figured it out. First, turn the CD Player off by quickly pushing the "Source" button. This is also the volume knob. Then, after the player is off, hold down the "Source" button. This will bring up the initial setup. Use the arrow keys to navigate through the options. One of the options is to turn the AUX port on. Once this is finished, turn the unit back on and you're ready to go.