Tarq 57, don't know what version you're using, but I've downloaded several more clips on Download Helper, and get the three-coloured ball logo appearing- very large, on the top LH corner! Just like the annoying logos on Sky.
The version I'm using is 3.2.2, from
here, (which is set to check for updates automatically, and I usually install updates, so it's probably the latest)
and I use the
FLV player to play them. No logo/watermark, or anything like that.