Are you using the hard drive inside the eversolo?
If this is yes. Than Plexamp won’t work this way for local files. The files need to be on a separate computer that is functioning as a Plex server. The music files go in the server computer and then the server sends the music to the Plexamp.
Just a side note. If you have a Tidal account you can use Plexamp with no computer no server and listen to Tidal through Plexamp.
Lastly Plexamp is not tested to work or optimized to work when side loaded. You are kind of rolling the dice. Feel free to give it a try. But its not officially supported this way.
