"Upgraded" Display Audio questions

Hi I'm looking to buy a used prius Four with:

• Upgraded Display Audio System with JBL GreenEdge Speakers

Does this unit allow me to play music from ANY app through usb or bluetooth or am I stuck only play music through Pandora, iHeartRadio, and whatever [email protected] apps are on Entunes? I don't care

I have a few apps that I would like to stream music from my phone (Soundcloud, Bandcamp) and don't like those corporate-backed sheep music apps like iHeartRadio.

Also can I have spoken navigation from Waze and Googlemaps played through the speakers?

Thanks