"Let's review at the end of the year when the Windows version hits the streets."
but that's a whole 'nother beast. it all works on apple machines because of the security that they provide. you pretty much can't read it with any other device: you listen on your mac, or you download it to an ipod. that's about it. though, if you're willing to put in the extra effort, you can burn it to an AUDIO cd (only), and then rip an mp3 from that cd, although i'm not sure whether they "degrade" it in the process. nevertheless, apple's built a closed system - or as closed as cds are - which prevents people from exchanging their digital music (again, to the extent that cd's do).
on windows, you don't YET have what's needed (palladium and the digital rights management kernel) to be able to do that. so i have no idea what plans they'd have in extending to windows, if any. but i'm pretty sure that nobody is going to pay $1/song if you can listen to the music only on your pc. apple's pretty much cutting it close as they are, since their apps don't give a direct means to export an mp3 to a cd.