If that does not work, and you need to load the module for you card, then, as root, do:
modprobe <name of the module to be loaded>
let's say you have a sound blaster compatible card, then "modprobe sb" would do it. If you know your sound card type then "modprobe your_card". You can modprobe for a lot of devices too, as scanners, webcams, joypads...