Problemer med lydkort

Nu vil jeg sq have løst mit lille problem. Problemet er at jeg kun kan bruge en application ad gangen på lydkortet.
Jeg kan f.eks ikke spille og høre netradio sammentidig. Lydkortet burde kunne håndtere det, da det virker fint i windows.
Går ud fra det er noget full duplex der skal sættes somehow.
helskov@helskov-desktop:~$ lspci
00:00.0 RAM memory: nVidia Corporation MCP55 Memory Controller (rev a1)
00:01.0 ISA bridge: nVidia Corporation MCP55 LPC Bridge (rev a2)
00:01.1 SMBus: nVidia Corporation MCP55 SMBus (rev a2)
00:01.2 RAM memory: nVidia Corporation MCP55 Memory Controller (rev a2)
00:01.3 Co-processor: nVidia Corporation MCP55 SMU (rev a2)
00:02.0 USB Controller: nVidia Corporation MCP55 USB Controller (rev a1)
00:02.1 USB Controller: nVidia Corporation MCP55 USB Controller (rev a2)
00:04.0 IDE interface: nVidia Corporation MCP55 IDE (rev a1)
00:05.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)
00:05.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)
00:06.0 PCI bridge: nVidia Corporation MCP55 PCI bridge (rev a2)
00:06.1 Audio device: nVidia Corporation MCP55 High Definition Audio (rev a2)
00:08.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a2)
00:0b.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)
00:0c.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)
00:0d.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)
00:0e.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)
00:0f.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:07.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80)
01:08.0 Multimedia controller: Philips Semiconductors SAA7134/SAA7135HL Video Broadcast Decoder (rev 01)
06:00.0 VGA compatible controller: nVidia Corporation G71 [GeForce 7900 GS] (rev a1)
helskov@helskov-desktop:~$


Nogle der ved hvilket chipset der bruges? Synes ikke google har givet mig svaret. Andet end jeg kan læse det er noget Intel hda.

Synes heller ikke jeg kan finde noget inde på Alsa siden.
Har fundet lidt her
http://gentoo-wiki.com/HOWTO_ALSA_sound_mixer_aka_dmix
under afsnittet:
intel8x0 audio card integrated on nforce2 motherboards
Men er i tvivl om det kan bruges her.

Mit bundkort kan ses her:
http://us.dfi.com.tw/Product/product_search_result_us.jsp?PRODUCT_ID0B=…

Går ud fra der også er tale om nforce2 bundkort her.
Bruger Ubuntu 7.10