Rough estimates of amount of knowledge human race has generated to date

What Google, Beatles, Sun Micro., Wikipedia & Aristotle all have in common? Archive.org is on a mission to make available on-line the entire body of knowledge(and art) human race had generated to date! This is an amazing, fascinating talk! I wonder if this is the most ambitious idea to date? The "Universal Access to All Knowledge" Brewster Kahle's (archive.org CEO) talk can be downloaded from here: http://www.itconversations.com/shows/detail400.html

Books, Texts:

It was estimated that there are about 100,000,000 books/texts were produced since Sumerian tablets. There are 28,000,000 books in US congress library. 24,000 texts are online at: http://www.archive.org/details/texts

Sound, Music:

2,000,000 - 3,000,000 records were ever released. 18,000 free concerts on-line legally available, 700 bands. Checkout out http://www.archive.org/audio/etree.php

Movies:

Between 100,000 and 200,000 movies were ever made, a lot of them are Indian. 300 movies already legally available on-line at: http://www.archive.org/details/movies Video of lectures from MIT is being put on-line as we speak.

TV:

There are about 400 original channels. 20 channels are being be archived 24x7, DVD quality - about 1 Petabyte, 1 week avilable

Software:

About 50,000 software titles ever released. Some old software is available online already legally.

Web:

Net is over 4,000,000,000 pages and over 35,000,000 web sites (domains). Way back machine - largest database ever with 100 hits/sec and 5 petabytes storage.