I did the bypass today, and now there is no audio from the DVD or CD player. The radio works fine. The DVD video plays fine. I have the 2013 firmware. Any ideas?

I assume you have an AMP, either factory or aftermarket...

I think your system is not wired correctly.

There are 2 blue wires on the back of the Z. One is for 'power antenna' (only hot when listening to the radio, the other is hot anytime the system is powered up.

It appears that your system has an amp and the AMP turn on wire is connected to the power antenna lead.

You can confirm this by changing settings. Go to the AV settings menu, select the System Settings tab, change "Auto ANT" from "Radio" to "Power".

I am willing to bet that your amp will now turn on and sound will work with library, DVD, etc.