If QTE fails to work for you, maybe PowerPC Media Center will work out. It's a small app (not really a 'media center') that can extract HTML5 video from websites and either save it, convert it to MP3 or play it through QuickTime Player. I use it for YouTube and many other sites all the time and it works a dream.
I've uploaded a copy to my server if you wish to try it out.
I've uploaded a copy to my server if you wish to try it out.