Solve : battlefront 2 (starwars)?

1.	Solve : battlefront 2 (starwars)?
Answer» i just bought starwars battlefront 2 off of STEAM and when i try to play it it takes me to my desk top. i can load the game but its when i click play or any of the buttons that it closes the game. i sent a email to STEAM but they are taking there time on this. i TRIED reinstalling the game but have the same issue. My PC has windows 7 and a I5 processor with a 250gtx nvidia video card. any ADVISE?ok i was looking and found http://forums.filefront.com/sw-bf2-problems-errors-help/415023-star-wars-battlefront-2-windows-7-a.html he said.... go to the Control Panel double click Sound to open it go to the Recording tab (second one over) right click in any open area within the tab select Show Disabled Devices select Stereo Mix and turn it on problem solved can someone explain how that works PLEASE? just very confused how sound fixed my problem...

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