On your issue with a playlist of .m3u's, I believe it is the same as the issue I have with a list of Web Radio stations.....the script is NOT parsing the playlist properly and it shows as NULL. My playlists with just songs (or albums) does work properly since the script parses it properly. I tried to fudge a playlist in the json format but so far wasnt able to get it right
if you look at /srv/http/bash/convertplaylist.php (I think since I am not looking rn), you can see it doesnt handle playlists other than those with separate songs correctly.......at least that is what I believe HTH
