solved the problem with monkey4 full music patch
 

first: sorry for my bad english
Than:..the instructions on the site are wrong
1) install the game
2)install the official patch(by lucas)
3) create( do not delete anything) in the game dir(Monkey 4): <gamedir>\Monkey4\MonkeyData
4)move the dir: Textures and Movies in MonkeyData (this is the same situation on theCD)
5)apply only the patch from the patch archive (Regsetup.exe)
6) Play and enjoy music

p.s. is ok on my italian version