Hi folks ! I'm having strange problems with RB3 and mics. RB2, RB1 and The Beatles Rock Band are working fine but RB3 doesn't work correctly. When I play with only the guitar, it's fine. When I play with one mic directly connected to one of the 2 USB ports (HDD in the other one), it's approximately fine (no points counted in games, but it recognizes my voice correctly). When I plug the USB mic through the guitar hub (Beatles RB guitar), the mic doesn't work at all. There is a really loud noise wether I play with guiter+mic or mic alone. Sorry if it has been discussed before, couldn't find a clear answer to my problem. I've got The Beatles RB instruments + GH6 instruments (including mic). I've played with Hermes cIOS222/223rev4 (IOS36 merged with IOS37) and USB loader GX. Guitar hero 3, RB1, RB2 are working fine with it (USB Loader GX/cIOS222rev4/IOS36 merged with IOS37).