Playlist not importing

Issue description:

I can’t import my Poweramp or Musicolet playlist. It is in m3u8 form. Symphonium is the only app that I have used that doesn’t allow importation. Please advise. I have been trying for months.

Logs:

Upload description: Hello again. My local WAV tracks and some of mylong playing tracks won’t automatically advance to the next track unless I manually advance them using the advance track button

Additional information:

 

 

Reproduction steps:

 
I press cast button. Then play WAV tracks. Track won’t advance properly when finished.
 

Media provider:

Local device

Screenshots:

     

Do you have a playlist issue or a Chromecast issue .???