I just found out about these and have purchased a few from Itunes. Lots of several mono versions of hits and of course, they're all original 45 edits. "December, 1963 (Oh What A Night!" sounds really good and this digital file replaces my worn-out vinyl copy from 1976 quite nicely. I believe Amazon also has these, and Napster and Rhapsody might as well. Amazon even has the mono 45 edit of "Light My Fire" which has been damn near impossible to find for a very long time. Here's hoping Rhino sells enough of these to keep the concept going!