I can't tell from you post, but assuming that you have integrated audio on the motherboard.
Have you disabled the onboard audio in the bios?
I believe the Aztech is an ISA card. Check in the bios to see if there is a ISA audio setting and select that, then save and exit.
I installed an old Aztech 2320 sound card.All drivers are installed and operating.Problem is, I don't see any difference with or without!? I have win98 on a dell dimension v333c. Am I missing ajumper,an internal switch or what? HELP

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic