LoopDown is a tiny bookmarklet (javascript code snippet), that allows you download loops from Looperman.com without being logged in.
To use it grap everything from LoopDown.js except the first line. The type javascript: into the url bar of your browser and paste the copied content. The script will only work while you are on Looperman.com browsing loops.
You can create a bookmarklet to save the time for copying the script and have it at hand with only one click. But be sure to check back every now and then in case the script changes!