If you have a Conexant HD Audio codec in your PC or laptop you are not receiving drivers and probably won't/ Conexant is notorious for not even supporting their own products with basic driver sets, so it may be some time till the ALSA and OSS projects even have minimal driver support for these chipsets.
You may want to look into a USB or PCMCIA Audio solution as an alternative for now.
Edit: After some research I was told the Intel_HDA driver or the NV_MCP driver will probably work for getting audio on Conexant chipsets. User beware though.
Edited by whitetigerx7, 27 September 2007 - 05:49 PM.