Apple will be live broadcasting their September Event about music, iTV and iPod Touch for the first time. However, the conference can only be viewed by users who have a Mac, iPhone, iPod Touch or iPad.
Though Apple has suggested that the protocol they are using is an industry standard, only a few companies have implemented it, so you have a very small chance of being able to watch it on Firefox, Opera, Google Chrome on Windows 7 or Linux.
If you have a Windows or Linux based PC you will not be able to watch the videos, however, there are a few workarounds for them.
If you are a Windows user, you can download Safari for Windows from here http://www.apple.com/safari/ and load this streaming video sample in it to see if you are able to watch it. If you are, then you are all set and can watch the live streaming of the Apple September 1 event on your PC.
If you are not able to do it then Mac Rumors suggests using VLC Player. To use VLC to watch the Apple event you will have to insert the stream URL as a playlist into VLC. For that Go to "View -> Playlist" and click on the "+" button and select "Advanced Open" from the options.
Once you do that, select the Network tab and add the Apple Event stream URL into the available textbox and click on "Enqueue" button. This will enable you to view the Apple September Event live on Windows or Linux. We will try and find more solutions to watch this Apple September Event in Windows and Linux and post it here.
Update: Apple is explicitly blocking the live broadcasting on Apple.com even if you have both Safari and QuickTime installed. You could use the Firefox user agent switcher, however, you will still require QuickTime. Alternatively you could also use the embedded video below to watch the event live.