>>>>I keep getting a prompt to install the QuickTime plugin here on the UT. What content am i missing?
>>>
>>>Are you using Chrome?
>>
>>Firefox
>
>A media player plugin is required to play the audio generated by this site e.g. the "Reply(ies)" sound.
>
>By default FireFox offers to install the QuickTime plugin. QuickTime is bloated and has a long history of serious security holes. I use the "Microsoft Windows Media Player FireFox Plugin" instead. I installed that with FireFox 3.x, and it's continued to work with 4.x and now 5 (on Windows 7 x64).

IMO QuickTime is the most persistent and annoying add-in in the world with the possible exception of Adobe Reader. What we need is a software "do not call" list.