my audio device is cmedia cm6501 and it`s not recognized in alsa. i can hear sounds, but it`s not working with full duplex and i can`t set balance on players (like xmms, audacious). anyone knows the problem and can help me?

here`s what it says in windows:

Code:
3D Audio Engine: Xear 3D CRL3D DS3D EAX2.0 A3D1.0
Audio CODEC: CM6501
Audio Driver Version: 5.12.02.4219(72)
Audio Controller: Standard OpenHCD USB Host Controller