Oh dear! I'm so sorry it's proved difficult for you. Do you have VLC media player? It plays most formats of vids so if you are having trouble with the .avi file it's a good one to try. Or is it that you can't download from sendspace? I could put it up somewhere else?

For imeem, you need to have Flash 9 installed and I personally find it really pesky too (it keeps crashing my browser!)