Rated 5 out of 5 stars
Firstly, thanks for this great add-on. With regards to YouTube videos, I am having no problems downloading videos using DownloadHelper. Yes, the MP4 option is missing (YouTube's fault) but there is no problem downloading/playing by selecting the FLV option. I have now installed your beta version, and, again, no problems. I am using Mac OS X. Any other Mac/Windows users may wish to convert FLV files to MP3 (or whatever you wish) by using a free application called MPEG Streamclip. Type that into a search engine.
Again, thanks for DownloadHelper. Really appreciated.