After installing Audio Cleaning Lab 3 I have noticed that Audio Cleaning Lab 2 remained also installed. Should I just simply uninstall Audio Cleaning Lab 2 or will this cause functionality problems with Audio Cleaning Lab 3 (due to shared drivers, resources etc.). Should I instead "Deactivate Program ... " as seen in the Help pull-down menu?
Unless you need to free up space on your hard drive, there is no need to uninstall SFACL2, it will quite happily coexist alongside SFACL3. The two are independent installs.
Also, as implied above, there is no need to deactivate the older program.