It is like bootleg concert recordings but the quality is better and I had to pay for it :)
Tonight my wife and I went out to a Jewel Concert, which was great... although our position on the grass gave us a better view of one of the main support poles on the stage than of Jewel herself... and at the end of the show, we picked up our "Instant Live" CD of the concert (yes, the concert that had just ended). I wasn't keeping exact track, but it seems like it was approximately 15 minutes from the end of the show until the first boxes of CDs, already in 'jewel' cases, came out for distribution.
Now, if you really wanted to, you could just leave and then go to their website and order a recording (for $5 more, but only if you already had paid for a CD at the show), but I really wanted to have the actual disc within minutes of watching the show, so I made Laura (my wife) wait :)
As I mentioned at the beginning of the post, the quality of the music was good... I'd even say excellent... so if you like live CDs (and don't mind the ambient crowd noise) then you'll really want to check this out if you see it at a concert.
Check out the "Instant Live" website for more information...