One more sugestion: Put the sound track of the Monkey4 in the mute scenes of the game.
To illustrate, I did this video:
PS.: Ignore the brazilian translations in the scenes.
I remember that exist a program that export and convert the Monkey4's .m4b files to MP3... but I don't have it anymore...
But I did the video with the sound track that i found here: http://soundtracks.mixnmojo.com