I tried importing appropriately formatted to text M3U playlists. Names were imported but no entries, except one (longest of all, I think). I then loaded one tune into Red, exported the playlist to usbc and created another, duplicate of Red in Notepad only of a different name but using the same format (parsing beyond the name= line the track entry lines were character by character alike and of the same length).
I then tried several other experiments, silly me, and the Playlist system looks to be in need of repair - the only playlist I can see on the phone app is Red, and it is inoperable. I would like to get back to a fresh start on this, if I could.
I have, by the way, nearly 8,000 tracks in the b2, which imported flawlessly from an external HD via usbc. I have 8 or 9 playlists totaling well over 500 tracks I would like to import.
Long post, for which I apologize. Any help would be greatly appreciated