Click "Buy Now" and name your price as zero (or more), and you can download a juiced-up conga sample (with an Attribution Share Alike license) for free when you sign-up for my mailing list. You do not have to download the sample.
This sample also comes bundled in an album with The Mailing List Song.
from Mailing List,
track released June 1, 2012
conga, & audio by Betsy Again