Originally Posted by edd_jedi
You were right Steve, I messed around with the tooltypes on the WHDLoad games and it has solved the glitchy sound
Still none-the-wiser how to apply AHI to Scumm though if anyone can help.
You don't need to apply it, scummVM just uses it. Have a look at the ScummVM readme, it tells you how to set up AHI and how to improve your system's performance.
Oh and don't forget to install PFS3 or SFS, FFS is terrible for things like ScummVM.