Haha!
Not bad, but perhaps quite a bit too much humoristic than serious, or some sound effects aren't really appropriate. But it's a good start!
As for the Horny laugh, there's one in the Beta introduction sequence. You can get it in my DK Unofficial Patch V4.
I had no idea it was actually possible to edit the video sequences. I remember that there was additional sound effects in the Goodies CD of the collector editor of the game, some of them being reserved especially for the video sequences. It could be very interesting to pimp the video sequences and include them in KeeperFX. I definitely need to give this a try.