Here are the currently surviving talks from DEF CON 6. If I get more recovered I'll post them here.

Here is the RSS to the complete collection below:
https://www.defcon.org/podcast/defcon-6-audio.rss

DEFCON 6 Hacking Conference Presentation By Bruce Schneier - Tradecraft on Public Networks https://media.defcon.org/dc-6/audio/...ks - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Dan Veeneman - Future and Existing Satellite Systems https://media.defcon.org/dc-6/audio/...ms - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Ian Goldberg and Austin Hill - Announcement of Zero Knowledge Systems https://media.defcon.org/dc-6/audio/...ms - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Ian Goldberg and Austin Hill - Cryptanalysis of the GSM Identification Algorithm https://media.defcon.org/dc-6/audio/...hm - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Ira Winkler - Hackers display skills that can be picked up by a monkey https://media.defcon.org/dc-6/audio/...ey - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Jennifer Grannick - A Review of Several Major Computer Crime Cases from the Past Year or Two https://media.defcon.org/dc-6/audio/...wo - Audio.m4b
DEFCON 6 Hacking Conference Presentation By John Q. Newman - The Lastest in how to REALLY Not Be Found https://media.defcon.org/dc-6/audio/...nd - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Krusty - Social Engineering Contest https://media.defcon.org/dc-6/audio/...st - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Lorenzo - A discussion about Information Warfare https://media.defcon.org/dc-6/audio/...re - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Mike Peros - Massive Illegal Wiretapping Exposed https://media.defcon.org/dc-6/audio/...ed - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Mudge - TCPIP Drinking Game https://media.defcon.org/dc-6/audio/...nking Game.m4b
DEFCON 6 Hacking Conference Presentation By Paul Kocher - Designing and Production of the First Dedicated DES Cracker https://media.defcon.org/dc-6/audio/...er - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Peter Shipley - An Overview of a 2 year Effort in Massive Multi-modem Wardialing https://media.defcon.org/dc-6/audio/...ng - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Richard Thieme - The More Things Change The More They Dont https://media.defcon.org/dc-6/audio/...nt - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Super Dave - Copyright vs. Freedom of Speech https://media.defcon.org/dc-6/audio/...ch - Audio.m4b
DEFCON 6 Hacking Conference Presentation By The Dark Tangent - Capture the Flag (ctf) Contest Results https://media.defcon.org/dc-6/audio/...ts - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Unknown - (Partial) Scientology Intimidation Tactics https://media.defcon.org/dc-6/audio/...cs - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Winn Schwartau - Hacker Jeopardy Friday Night https://media.defcon.org/dc-6/audio/...iday Night.m4b
DEFCON 6 Hacking Conference Presentation By Winn Schwartau - Hacker Jeopardy Saturday Night https://media.defcon.org/dc-6/audio/...ht - Audio.m4b
DEFCON 6 Hacking Conference Presentation By Winn Schwartau - Introducing the Time Based Security Model and Applying Military Strategies https://media.defcon.org/dc-6/audio/...es - Audio.m4b
DEFCON 6 Hacking Conference Presentation By the Cult of the Dead Cow (cDc) - The announcement of Back Orfice https://media.defcon.org/dc-6/audio/...ce - Audio.m4b
DEFCON 6 Hacking Conference Presentation Panel Discussion - Securing Distributed Systems https://media.defcon.org/dc-6/audio/...ms - Audio.m4b