I am running plex server on my windows machine. Logged in using same credentials which I have provided while logging in at the time of enabling alexa skill. I have successfully uploaded some music files which I can play using the desktop browser successfully. However, when I am invoking Plex skill to play some music, I am getting an error on alexa device saying "You dont have enough music to build radio station for your music library".
I am having a similar issue. I can play individual songs, songs by an artist name and playlists I have created; but, I am unable to play the ‘Music’ library (all my music is located in this library).