o.o The link on the first page(
http://games.on.net/filelist.php?app=1565&menu=1) has the OB client. It only took me 3-4 hrs to download the file, and me uploading/you downloading would take -much- longer than downloading from there.
Missing 1-3 of the opening hours isn't that big of a loss. Trust me, there will be enough people on the servers that you won't feel lonely