Well, can't say, I don't have any mp3's becouse I do, but I've bought many CD's simply becouse I liked few (illegal) mp3's I heard.
But in some cases, I might have only mp3 versions, like
a) If the CD is really old, and impossible to get as new, only possibility to get it would be finding it second hand (The artist wouldn't be getting any of that money anyway) if you're very lucky.
b) CD's, that are released only in Playback Pro... Sorry, I meant to say COPY protected versions. Why should I pay for something, if the record company doesn't want me to be able to listen to it anyway?
Original CD doesn't work - mp3's do. I really hate that, but that's the way it is.
