Add x64 Build target
Add updated FMOD libraries and API
Updated Projects with WIN64 conditional compilation
Add 64bit Installer
Some locking around the fmod update and clean up of the event handler on dispose.
Revert "Not sure this is enough, but I synchronized all the important entrypoints in FmodInstance.cs.  Running for 20 mins so far (which proves nothing), but checking it in just in case anyone else wants to try it."

This reverts commit b058f79a7e22a79d52a277ca4e860596ec7c6111.

Will take Jeff's instead
Take Jeff's fmod fixes
Add x64 Build target
Updated Projects with WIN64 conditional compilation
Add 64bit Installer
Add updated FMOD libraries and API