There are personal and scary and we probably shouldn't be listening to these. But...
In tape 2, Oksana repeats to him, "you need medication". His response has to be heard to be believed
UPDATE: Tape 4 just surfaced..
UPDATE 2 (Tape 5..how many of these Mother F^&^&^ers are there?!)
UPDATE 3: Tape 6..is there no end to these things?? This one's pretty good though
UPDATE: July 27 - Tape 7
and in closing, some comic relief (if you've just listened to those last 8 tapes, you'll need some):
UPDATE: July 17 - Experts say tapes were tampered with. See the report here