Keep guide music "running" like a channel

[daguire]

Enhancement request to have guide music continue looping when navigating away from the guide, similar to how channels work, although simpler. So that each time opening the guide doesn't restart the music, and instead seeks to an appropriate time in playback.

This would be more consistent with a cable experience, and would avoid only ever hearing the same first 5-10s of the audio file.

Awesome project, thank you for the consideration.

[shane-mason]

Good callout - I'm calling this an enhancement, but its more of 'finish the feature' type thing - it also stops playing after the first loop.