Problem in detecting sound card
I just switched to Linux and i have a problem in setting up my sound card.
The problem is (i think) that i have actually 2 sound cards.One on-board and a Sound Blaster audigy.
The thing is,when i use the on board card i can play mp3 files and have sound in videos but i have no sound from sites such as youtube.
I want to use the sound blaster card and enable my 5.1 speakers.
How can i do that?
P.S when i use the on-board card only my 2 front speakers work.
Thank you in advance for any help