Apple released iTunes 11.0.5 on Friday, an update that, "corrects an issue with iTunes in the Cloud, where some purchases may download or play unexpected items." The patch comes on the heels of iOS 7 Seed 6 for developers, an unexpected developer update on Thursday that patched the same problem.
You can download iTunes 11.0.5 for OS X direct from Apple as an 187.46MB download.
Apple also released iTunes 11.0.5 for Windows 64, an 86.68MB download.