Since many people already have this live set downloaded, I'm going to give the time each new track comes in and a short description.

In order of importance to me:

63:42 : new riff apparent. Tiesto yells "come on!"

49:46 : 3 bells ring. There is foreign speech comes over the loud speaker. Talks about passengers on a flight. Then a hot riff starts.

16:12 : new riff

24:40 : new riff, Tiesto yells something, riff continues

8:52 : major synth riff starts

oh since you are new, I'll cut you some slack

look the tracklist forum has a DJ archive at the top, use that or use the search function, we have a tracklist of most events and this was a popular set, so we do have it but since I said I'll cut you some slack

DJ Tiesto @ Trance Energy 2000 (31-12-99)

1. (00:00) Spoiled & Zigo - More & More [Unvocal Mix]
2. (05:50) Mario Lopez - The Sound of Nature [Plug 'n' Play Remix]
3. (11:05) Mario Piu A.K.A. DJ Arabesque - Serendipity [Mas Mix]
4. (18:12) Arrakis - The Spice
5. (20:37) DJ Tiësto - Sparkles [Airscape Mix]
6. (25:00) Vengaboys - Kiss [Airscape Mix]
7. (32:00) Balearic Bill - Destination Sunshine [DJ Tiësto Power Mix]
8. (37:09) The Digital Blonde - Electra
9. (42:39) Body-shock - Sleepless
10. (48:09) S.O. Project - Direct Disko
11. (51:40) Zombie Nation - Kernkraft 400 [DJ Gius Remix]
12. (55:58) Binary Finary - 2000 [JamX and DuMonde's Remix]
13. (62:07) Rank1 - Airwave [Original Mix]

Note: some versions seem to have 3 extra tracks:
01 Kay Cee - Millenium Stringz
02 The Quest - C Sharp
03 Kamaya Painters - Far From Over (Original Mix)