This doesn't work properly with the Media Library, which I use constantly.
I have to manually play a song in the ML for it to be recorded in the CSV file.
This does not happen with auto-played songs in a normal playlist.
However, the Media Library is just a playlist in VLCs eyes - since it's a xspf file - therefore one would expect it to function nominally.
Also, I have to activate the extension manually every time I open VLC. That's terrifically inconvenient - it trivializes the extension because 90% of the time I'll forget to activate it because it's a passive feature, not an active one.