Thanks people. Mobo Gigabyte GA-8IG1000 Pro. I think you're right Diesee. I'll just leave it if the connection cuts off the loudspeakers I had thought maybe its only cut off when the phones are plugged in.
BTW, do you guys happen to know of 5.1 speakers with earphone plug on the front. I don't want the audigy ext. or extigy ext whioch both have this capability.