Theres 3 interface units that you can buy.
M2 TECH
http://www.hostboard.com/forums/hbmc...2011/01/23.jpg
BEHRINGER UCA202
http://www.hostboard.com/forums/hbmc...2011/01/24.jpg
And one by TC Electronics. More expensive
http://www.hostboard.com/forums/hbmc...2011/01/25.jpg
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http://www.hostboard.com/forums/hbmc...2011/01/26.jpg
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