The Addons Depot is actually back up.
I'm not a technical expert, but most ofpec files are arranged to prevent dishonest websites linking to our files and presenting them as their own. (It was quite a problem at one time.) This may be the root of the trouble.
Getright (or any other d/l manager) is of course welcomed and I suspect that Jake Trans is right, if you beat it over the head hard enough you can probably make it work.
Edit:
Start Getright
Double click on the tray icon to bring up a Getright window
Find your ofpec download link and right click on it
click Copy Shortcut
In the Getright window click File
click Enter new url to download
right click in the box
click Paste
click OK