Ok this is where a lot of us are disappointed and confused so I'll try to some it up easily.
There are 2 USB ports on the rear of the nex 8000, that's great, the downfall starts here.
In the settings under smartphone set up you must choose one of the following CONNECTION types
Digital a/v adapter
Bluetooth
USB
If you choose digital adapter the following scenarios happen.
App mode works fine
Using the car audio app will see the music on your phone.
Pandora and aha work fine
The bad
Bluetooth music will not work
The unit will not work for a 2nd iPod connected to the 2nd port it gets disconnected
You must use HDMI selection to play music from your phone,
clicking usb1 will tell you incompatible device
Choosing Bluetooth
Streaming pandora works fine as well as aha or any other music from your phone.
App mode does not work
USB 2 does not recognize iPod 2
USB is not seen either
Choosing USB
Allows both USB ports to be utilized for iPods
You must disconnect your apple digital av adapter and connect your phone directly USB in order to use pandora
App mode does not work
Here's the kicker, no matter which setting you chose, your phone will still be able to utilize Bluetooth to send and receive calls.
What they need to do is write drivers, and have connection settings for each USB port because whatever selection you choose effects both ports.
My setup
Nex8000
iPhone 5s
Pny 32gig sdcard filled with music
iPod 30'gig classic
I hope this helps some of you, I love the unit even with the downfalls that I think firmware upgrade could fix.