They are claiming to have a video of today's bombing to be released later. The downloads I listed above could very well be of an earlier attack as they do mention having earlier footage of other bombings at Mosul.
This is a translation from the ribaat.org site:
__________________
Greetings, here is the communique:
21/12/2004
10/?????/1425
The Ansar Army is claiming the attack against the base at Mosul. The martyr operation was done by a group of moujadeen(sp) and the attack was filmed. The film will be widely broadcast, god willing.
It was not a shell (Howitzer) that killed 160 Crusaders! The Crusaders have declared that it was a mortar attack in order to minimize their losses. It's true that in the past we've seen mortar attacks against this same base, filmed by the brigade "Mustapha."
_________________
I appreciate your translation, too.