Hello,
I am working on a new platform for media_player (mopidy) and would like to show albumart in the media library.
Cloud services like Spotify and TuneIn have thumbnail urls to their services, however local media has the urls relative to the Mopidy Media Server.
As long as you are in the same network, your browser, or app can access those resources, but once you’re outside of your (home) network, this doesn’t work anymore… 
Is there a way to “proxy” these urls through “cached” images on Home Assistant?
Many thanks in advance.