Here is the minimum number of rules I was able to add to a Privoxy setup to let the Têtes à claques videos through:
{ -block }
www.tac.tv/modules/population.php
www.tac.tv/ajax/populerSlider.php
.tetesaclaques.tv/ajax/populerSlider.php
.tetesaclaques.tv/ajax/populerSliderIndex.php
.tetesaclaques.tv/modules/population
tac.ads.streamtheworld.com/crossdomain.xml
tac.ads.streamtheworld.com/adxml_video.php
The same rules may be useful to anybody wanting to watch contents delivered through streamtheworld.com
without disabling their ad-blocking proxy entirely.