There is an audio of a 36 second burp from a girl here on this page if you scroll down. But I can't seem to get it to work now for some reason. Maybe someone else can? I can't get any of their files to work. It's probably the most impressive burp I've ever heard. http://www.belch.com/belch.html
look for the one from sangria. She had a couple submissions on here from a long time ago.
Also, nanaimogirl2000 on youtube used to have some amazing burps that were over 20 seconds. I think I remember her saying she could burp for over 30 seconds on one of her videos before. But she removed all of those videos a while back. Anyone have them?http://www.youtube.com/user/earthchild28
This girl used to have some awesome burps too around 20 seconds sometimes. Anyone have those?
Those .lynn files don't work for me. Could someone maybe upload them to soundcloud or something? FTP seems to not work.