Add more exception catching/loging
Minor change, /* */ to // in .muffin file

Because you can't nest /* */ style comments and it makes playing with
the files somewhat slower.
Remove the CHECKER.DDS box of Level0

The same box that is never used but appears in the middle of Sweet Apple
Acres because we load Level0 with the GUI, but level unloading isn't
implemented so we never unload it.

We don't need it anyway, so bug "fixed".
Add BackgroundMusicHandler