Hey all
Was able to follow this guide to get the Spotify app to show up in Android Auto.
The app displays on the cars screen, displays current song runtime, accepts controls, and all the other expected behaviours; but does not output any sound.
Phone is connected via USB-C cable. Wireless Android Auto and Unknown sources are enabled in the developer settings. Permissions for Wired and Wireless are enabled in the Sandboxed Google Play Android Auto settings as well as the audio reroute permission
Device info
Pixel 7 Pro
Graphene OS build number 2024120900
Spotify version 8.9.98.488 from Aurora Store
Android Auto version 13.1.644254-release (2147483647)