For what it's worth, AAC is not "their own" format. It wasn't invented by Apple and it's not controlled by them or any other company. While MP3 is a de facto standard, AAC is an ISO and IEC standard, part of the MPEG-2 and MPEG-4 specification. (Source.)
"Can I upgrade previously purchased music to iTunes Plus?
Yes. Any available upgrades will be shown on the Upgrade My Library page (Music received for free is not eligible for upgrade). You can upgrade all music at one by using the Buy button. This replaces all music you've bought previously on iTunes with available iTunes Plus versions of the same music. You cannot choose which songs, music videos or albums to upgrade individually. Song updates are available for 30¢, video upgrades for 60¢, and albums for 30% of the album price. iTunes Plus music will continually be added to iTunes, so check back often to find new music available for upgrading."
Re:
It's amusing to see anonymous comments defending this new law, when anonymous comments are one of the very things the law prohibits (Art. 29.)
Re: Re: Re: FYI not MP3 format
I stand corrected.
Re: FYI not MP3 format
For what it's worth, AAC is not "their own" format. It wasn't invented by Apple and it's not controlled by them or any other company. While MP3 is a de facto standard, AAC is an ISO and IEC standard, part of the MPEG-2 and MPEG-4 specification. (Source.)
Re: Re: All or nothing
From the FAQ (emphasis mine):
"Can I upgrade previously purchased music to iTunes Plus?
Yes. Any available upgrades will be shown on the Upgrade My Library page (Music received for free is not eligible for upgrade). You can upgrade all music at one by using the Buy button. This replaces all music you've bought previously on iTunes with available iTunes Plus versions of the same music. You cannot choose which songs, music videos or albums to upgrade individually. Song updates are available for 30¢, video upgrades for 60¢, and albums for 30% of the album price. iTunes Plus music will continually be added to iTunes, so check back often to find new music available for upgrading."
All or nothing
The worst part is that you can't choose which songs to upgrade: you have to upgrade all of them, or none of them.