Apple has posted a Knowledge Base article (#305563) with some important information about how iTunes Plus purchase preferences work. Among the salient points:
- "The format of music you will receive with a Complete My Album purchase depends upon how you have set your iTunes Plus preference. If you've set your preference to always receive iTunes Plus music when available, you will be given iTunes Plus music, regardless of the format of the songs that were previously purchased from the album."
- "If the tracks you own are AAC Protected or a mix of both AAC Protected and iTunes Plus, and if your iTunes Plus preference is ENABLED, you must upgrade your tracks to iTunes Plus first, before the album is eligible for Complete My Album."
iTunes Plus preferences can be controlled by choosing View My Account from the iTunes Store menu, clicking View Account then clicking the Manage iTunes Plus button.Resources