What does "treat contents as a single tune" do?

I was hoping it would allow me to lump all tunes in a playlist together so that skipping back and forward would skip over all of the tunes in the playlist as if they were one, so implementing "skip inner playlist" sort of by accident. :)

For newcomers.... "skip inner playlist" is something I keep gently hassling Mike about as it would allow skipping an album at a time if you had a playlist per album with an outer playlist containing many inner playlists. I think this would make it work a lot like a CD changer rather than the current behaviour of having to skip forward N times, one track at a time, until you get to the first track of the next album or "inner playlist".

Cheers,

Mark.