Can you send to my account email? I’d like to not show email to everyone.
Meanwhile I discovered, that renaming .opus files to .mp3 makes m3u list
work without stopping after every track and without “Playback failed: File not found” error message. It seems that main issue is that m3u playlists with .opus files don’t work fully (maybe firmware code for external playlists was writen only for popular filetypes like .mp3)
Renaming .opus to .mp3 makes player freeze sometimes, and I have too many opus tracks, renaming these all to .mp3 will be hard, isso this not very good solution.