How many icons are in that zip file?
The more I think about, the more I think that 77 megabytes is a RIDICULOUS size for an icon library. Even if there's a thousand icons in it, that would make them an average of 77 kilobytes each... which is still massive.
I downloaded OpenOffice 3.0 a few weeks ago and it was only about 80 megabytes... so how the hell do a bunch of icons measure up to 77 megs?!