When it works, it works very well. It seems to be inconsistent. For example, on my xp computer it plays, but does not download (loads to apple quicktime for some reason). On my vista computer, it does not play at all, but downloads work fine. Zero as in no support or instructions at all that I can find. Overall, this works a lot better than anything else out there, but still leaves a lot to be desired. It would get five stars if it worked consistently with all os/browser combinations. As is: spotty but still far superior to anything else I have tried.