Well since the awesomely patched exe I heard so much about was pretty much gone from the innernets D:< I hunted a while and came up with a solution that seems to be working pretty darn perfectly.
One copy of Grim Fandango that will get into the game (aka a version patched for modern pcs with a launcher I found somewhere a while back which didn't fix the problems but did make it install on a 64 bit system) or one that doesn't get that far and the 64 bit installer that I lost the link to
One copy of a launcher thing like the one found here: http://www.majorgeeks.com/Win2000_Launcher_d438.html
Step 1: Install Grim fandango with a 64 bit installer as found elsewhere in the internets
Step 2:Open Win2kLauncher or other similar program
Step 3:Fill out the program name as Grim Fandango (Or desired name within the launcher)
Step 4:Use the button in the launcher to browse to Grim fandango's main exe (or as I did due to laziness the other launcher's shortcut on the desktop(that is installed by the 64 bit installer))
Step 5:Give it whatever priority you feel it should have with the scroll bar (I went one off the max since the max seemed a bit high) and uncheck all the processor boxes apart from the first (it shows 9 boxes iirc even on dual core machines)
Step 6:Use the launch button in the win2klauncher after selecting the name you gave the profile for Grim Fandango
Step 8:Profit (or just have fun playing Grim Fandango without any nasty audio freezing/game freezing, that works too)
So yeah I hope this helps anyone with problems in future.
Long live the slayer of all sketches!