The Live Music Archive at archive.org now contains over 10,000 concerts. 10 terabytes of information on 60 servers, 1 petabyte downloaded, currently at 50MB/sec. Seriously, I don't understand how they do it. Now they're converting most of the concerts to MP3/Ogg, which should save a lot of bandwidth.
A useful tip for OS X is to save the lossless zip files to the desktop, then unzip them from the command line. The automatic Safari->unzip process seems to choke on the big files.