Please, I desperately need direction in finding concerts and interviews. Having already started my collection I want it all. Don't have anything worth trading so....
I'm sure if you head over to the Announce forum you will find many concerts and interviews to download. If there is anything specific you want try the request forum.
If on the other hand you want to buy actual interview and concert CD's/Vinyls then there is an excellent site called ebay.com that sells many of these items.