I have the latest Flash pluggin installed, in FF 13.0.1. Two or three updates of that pluggin ago, at the same time as the problems with certain Youtube videos not playing surfaced, I also discovered that the web-page-based music sample player at eMusic.com will not launch. Instead I get a dialog box saying "You have chose to open [string-of-numbers].m3u which is a: Winamp playlist file..." and prompting me to either open it with Winamp (on a radio box) or to save the file. This was after Adobe (the stand-alone program) had prompted me that it needed to update itself, and I'd let it. The first time around, I found a page that recommended going into Windows Control Panel and uninstalling Adobe Flash Player 11 Plugin (I think it was, I've lost track of the page), then launching FF again, going to youtube, letting it detect I needed to install the flash pluggin, and installing from in the browser the FF flash pluggin. When I did that, the youtube videos went back to playing, and the imbedded eMusic sample player went back to working as well. The next day or so, I got the same message from Adobe telling me the program needed to update itself, and I again let it, while at the same time hoping I wasn't going to have the same issue I'd had the day before with THIS update, while also wondering why they'd so soon after he previous software update have a NEW software update like that. Well, this time, of course, it also broke Youtube vidoes -- though I did discover SOME Youtube videos would still play -- and again also broke the eMusic song sample player. And this time doing the above fix did NOT work. For several days now, I have been trying to get it to work again. I HAVE managed to get Youtube videos to play again, by going into RealPlayer preferences > Downloading & Recording, and unchecking "Enable Web Download & Recording for these installed browsers" (per instructions from Adobe on this), but I still can't get eMusic song sample player to work. Edited to add: Oh yes, and that last change, in RealPlayer, I did after the additional update to the Adobe pluggin from today that was mentioned in FF's twitter feed and which specified it would fix the videos issue, and which didn't fix it until I did the change in RealPlayer... which... largely negates the reason I installed RealPlayer to begin with. addendum: On the other hand, I followed a link from one of their ad emails to an album sample page http://www.emusic.com/listen/#/album/mum/early-birds/13342283/ and it loaded the in-page music sample player, and played the song samples in page. But it still doesn't work if I go to their daily download page http://www.emusic.com/dailydownloads/toolbar/main.html and try to play the sample track, but if I then go to the album page for that one, it does load the player. This is nuts. Addendum2: Well, it seems the problem with the song of the day page is with the page itself, not my browser. They appear to have borked something at their end.