Delayed audio sound cancellation

hi, While i am listening to any online audio/song and when i try to cancel the web page/browser, the web page gets cancelled but the sound/audio still keeps on coming out and doesnt cancel syncronously along with the page. It takes 6-10 seconds extra for audio/sound to cancel/close after i cancel the page. I tried restore, safe mode,disk check and everything else one could think off but am unable to solve this problem. what exactly should i do to syncronise the cancellation of the sound along with the web page. Should i uninstall/reinstall the sound driver but i dnt think that can help, plzzz guide,thanks

Does this happen all the time? Or did it happen recently?

It happens only with my firefox browser and not internet explorer, i uninstalled and reinstalled firefox but didnt help, I did everything else to solve the problem but couldnt . This issue started a few days back and has expanded with time. Ran avira, eset,avast, avg, trend micro, all the rest and the best one can think off and the other tools one could think, One thing i can assure is that there is no infection or corrupted file.Eveything is nice and normal and clean except this delayed sound effect, any logical suggestions are most welcome.

Maybe it is a problem with your flash player, lets' try getting the latest version of Flash Player from here:

http://get.adobe.com/flashplayer/

This also happens because the Firefox process takes a while to clear from the system, so while the process is still running, the sound is still play.

To stop this you can open task manager and end the firefox process.