Doomsday Engine

In the title loops for the Doom2 based games, MusicOnce is only used for the first time the title pic is displayed.

A standard Music command is erroneously used the second time the title pic is displayed. It needs to be changed to MusicOnce as well, to imitate the original games; this is very noticeable with TNT where the title music loops as a result.

Also, a little observation regarding Vanilla Doom's title loops; they appear to show that the engine doesn't appear to stop the level music playing during a demo until an actual call to change the track is called (i.e the music from the level played in the demo will play over the CREDIT screen in the Vanilla Doom title loops).

As Dday currently has no demos for any game, this isn't information relevant to Dday, but it's something to keep in mind should Dday ever get demos for the title loops.