Problem installing EZDrummer -- "cannot find soundfiles"

Before anything else, log in (and/or register) at the [Toontrack|http://www.toontrack.com/my_products.asp] site and download the latest version (1.2) of EZD. As you have no idea how long the disks you just bought have been sitting on the shelf, the chances are that the version on the disks is out of date.

Also, I can't install the "Soundmover" (just getting an error installing message)-- could this be the problem?

You don't need that initially, and it isn't 'installed' it's just placed in /Applications/Toontrack in case you want to move the sound library later - to another disk, for example.

Yep, definitely get on the ToonTrack support forums, there are plenty of folks that have problems with this. EZDrummer is very picky about how its sound files are organized, how folders are named, and where everything is located. I got stuck on this too, once.

If you do a fresh install, consider trashing any any of your old EZDrummer sound folders that might be lurking about, just to ensure there is no confusion.