>>.. is different than in IE8?
>>
>>I use IE9 at home and IE8 at my primary office.
>>
>>Yesterday at the office I turned on audio notifications from Setup/Update My Account.
>>
>>Today at home I remembered the reason I had turned off audio notifications- every time the site tries to play a sound it gives me an error message telling me it can't find ".wav".
>>
>>So, I go to turn off audio notifications. Nope - not in native mode IE9. The Update My account page is different and the option to turn on/off audio notification is not there.
>>
>>I had to go to compatibility mode - then I get the Update My Account page that has the option.
>>
>>Odd.
>
>The error message when trying to play a sound is a RealPlayer error.
>
>"Requested file not found. The link you followed may be outdated or inaccurate."
>
>In the detail windos.. "http://www.levelextreme.com/.wav"
>
>This doesn't happen in IE8

I'm using IE 9 with audio notifications turned on and it works just fine.

BTW, you can turn it off by using Sound combobox on the left panel.