iTunes 10.1.1 fixes a glitch that causes the software to crash when a user is deleting a playlist that has the iTunes sidebar showing. The update also stops iTunes from crashing when connecting an iPod to a PowerPC processor, which Apple stopped shipping in computers in 2006. Other fixes include a compatibility problem in which some music videos may not play on Macs equipped with Nvidia GeForce 9400 and 9600 graphics. On the enhancement side, the update makes it possible to wirelessly stream videos from iTunes to the latest Apple TV.”]
Source: https://www.darkreading.com/database-security/apple-updates-itunes