iTunes 11.0.1 appears to fix the issue with the AppleScript reveal command, mentioned here.
But Command-L (Go to Current Song) apparently does not yet work correctly. Update: Go to Current Song/Command-L does work correctly. But it doesn’t select the track in the playlist it may be playing from; it selects it in the Music library. This AppleScript will select the currently playing track in the playlist from which it is being played: