iTunes Store: How to delete songs from iCloud Use the steps in this article in instances when you might need to delete a song or music video from iCloud.
iTunes in the Cloud: Purchases may display incorrect information or play back incorrect content In some cases, when you view the following types of content using iTunes in the Cloud, iTunes 11 may display incorrect information or may play back incorrect content: Music Movies TV shows
Apple Loops don’t appear in the GarageBand loop browser Computers bundled with iLife ’08 and Mac OS X 10.4 may not have GarageBand Loops available on first use.