Hi All, I have 3 devices. Ipod Touch newest model. Iphone 5S, and Ipad Mini first generation. Since the IOS9 upgrade, my ipod touch gives me a message when connected to itunes that it needs a newer version of Itunes to recognize this ipod. I have Snow Leopard and my itunes is as current as it can get without changing OS. My iphone seems to sync fine so I don't understand. My issue is whether I should take the plung and upgrade to Yosemite in order to get the new version of itunes. I love Snow Leopard and have been hesitant, but now devices are not going to work anymore with my imac so I need to do something. Any advice?