Hey Jim,
Here's a cut&paste from Tripod's help files:
What is remote loading?
Remote loading is using your Tripod account for the purpose of storing files (images, etc.) for use on another site, or for backup purposes. For free users, Remote Loading is unavailable. Free Tripod accounts used for Remote Loading violate our terms of service. If you would like to upgrade to a Tripod Paid Package.
So what's happening is, the Synthzone webpage sends the Tripod website "referer" information (it was the Synthzone that "referred" you to Tripod). Tripod doesn't like that. When you plug the URL into a browser straight up (not from a link on another web page), that's okay.
By the way, I thought the clips sounded very good. Very nice sounds.
-mike