For anyone that would like to make some drums and put them in an Installer here is a template for Inno Setup Compiler 5.5.5

Template InnoDrums.zip

app folder contains 2 text files that you can edit with your own drum info and a Demo folder if you want to include Styles.
drums folder contains your drums
realtracks folder contains your drum preview demos that are played in the drum picker window.
embedded folder contains readme info to be displayed while installing and images that you can customize for your installer.

You can easily edit the The Code - InnoDrums - wav.iss in a text editor or just open Notepad and drag it in.
Just do a search & replace: old drum name > your new drum name.
I have included one for wav and one for wma.

When you have made your drums just open the The Code - InnoDrums - wav.iss and Inno Setup Compiler 5.5.5 will come up, now just hit the Play button, it will create the Installer.exe in the output folder.

Drum Templates and info here http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=278338

User_RealDrum_Templates.zip

http://www.pgmusic.com/tutorial_realdrums_stylemaking.htm

Stylemaking templates for RealDrums developers (< 1 MB).zip

They can also be created as a Package for Mac with the PackageMaker in the XCode install from your InstallDVD or you can try this one Iceberg Creates packages and metapackages. Here is a Package ACountryRockEv8.pkg you can open with PakageMaker to see how it's put together. I will make a tutorial some other time.