You've got your Win32 executable built, but now you need to 
package it. What to do? Don't fret. 

- copy files license.txt and Gnaural.iss from source directory
"misc" to a safe and unchanging place (unchanging since doing
this consistently in one place will reduce the number of future 
annoyances looking for the license file and the executable, etc.).

- Once there, double-click the icon that Inno Setup leaves on your
desktop (ISTool might even be the better icon to click). Open
the iss file, edit the version name to make all instances use the
new version, also edit the path to the license file in case it 
is pointing to an old version, also edit path to gnaural executable.

- run "Compile" and you are done

