Allow continuous music playback during photo slideshows

Issue:
When playing music during a photo slideshow, it’s very disruptive when the music pauses for video playback.

Resolution:
Instead of pausing the music when Plex encounters a video in the slideshow, it would be so much better if it could “dim” the music volume during the playback of the video, then return to normal volume level after the video has finished.

*We mostly use Nvidia Shield to view slideshows on the television, so I don’t know the limitations involved with controlling multiple audio/video streams simultaneously on that hardware. But as it stands right now, when Plex encounters a video in a slideshow, it completely pauses the music playback AND it does not auto resume after the video has finished. Even if you can’t dim the music volume, it would be nice you could, at least, make the music resume playback when videos are completed.