I have what appears to be a similar problem.   I have a free website at 50megs.com. It's not finished yet because I can't figure out how to insert a playable file.

It's accessible RIGHT HERE

I'm not sure, but I suspect that the host has deliberately made it difficult or impossible to insert a playable or a downloadable file in the free websites; they want to rent you higher capacity.

Any ideas?

Dave Oesterreich