Here are the links to the Knoppix3.4-ct version for those who want to download the ISO image via p2p networks like kazaa,edonkey,gnutella.

Edonkey Link
ed2k://|file|KNOPPIX_V3.4-2004-01-22-DE.iso|719181824|658f08cb71b760b18bae86d6011d481c|

Magnet Link(for most of GNUTELLA programs)
magnetxt=urn:sha1:XORFDKAHZGNEESRPVVIEDJZ55OBZD4KP&dn=KN OPPIX_V3.4-2004-01-22-DE.iso

Older versions of Kazaa / Grokster / IMesh (requires sig2dat utility):
sig2dat://|File: KNOPPIX_V3.4-2004-01-22-DE.iso|Length: 719181824 Bytes, 702326KB|UUHash: =LkzblOhtGwyzNztqKDRpWpd+wjA=|