an easy way is to download the fedora sound card utility, this will install generic drivers for the card you have, and its never failed me (even working for a 5.1 surround sound card) the utility is 'system-config-soundcard', to get it just type in terminal...
apt-get install system-config-soundcard
then to run it just type in terminal 'system-config-soundcard'
a good mixer is alsamixer, you can apt-get install that one too