Learn how to use your Gameboy as a MIDI instrument 2 Responses zach June 26, 2016 where can i buy a mac osx leopard install cd for a powermac g4? and can i use snow leopard to install on my powermac g4? Reply Owen July 12, 2016 I would say eBay is the best place. Reply Leave a Reply Cancel Reply Your email address will not be published.CommentName* Email* Website Notify me of follow-up comments by email. Notify me of new posts by email.