Can Plexamp read and use m3u playlists?

Sorry to dig up an old thread.

Did either of you guys or has anyone found resolution to the “Status 200 OK” issue where after sending the command in Postman, Plex doesn’t do anything?

I have a Synology DS-1019 server which houses all of my music and runs Plex. I am doing all of this Postman work from my PC.

I indexed my Synology’s music library with MusicBee and then I used a plugin to sync my Google Play Music playlists. I then exported an m3u from that, which references the file locations of all of the playlist’s MP3s and their file/folder location on my Synology.

One other thing I am not certain of is whether there needs to be some kind of authorization. When I log into my Synology, I need to enter a username and password. I have tried doing this in Postman with the Basic Authorization as well as the Digest Authorization. In both cases, it still gives me a “Status 200 OK” or “500 Internal Server Error” depending on which Postman link I use.

I have been able to use @XDGFX 's PPP script to what appears to be good success:

But no playlists populate on my server in Plex, and the only result is a now merged m3u file on my PC that has the file/folder locations of all of the MP3s

I am looking to create the playlist on the Plex server.

Does anyone have any further suggestions on how to accomplish this?