I have created a playlist with one song with correct path, but Subsonic says...
"Import playlist
Failed to import playlist. No songs in the playlist were found.
Select playlist to import (m3u, pls, xspf)"
...when I select the playlist file and press ok.
However, if I create the playlist in Subsonic, export the playlist, delete the playlist and import it, I get the playlist imported as it should.
For me, the files looks exactly the same, but Subsonic refuse to find the song.