I am having trouble with my sound. I do have alsa mixer installed and can hear sound by default. However when ever I go to play a game, get on teamspeak, use IDJC, there is no sound at all. I am using a onbord sound card. If it makes a difference or not, the video card is a Nvidia GeForce 6150SE +430.

Ubuntu 10.04 LTS
Realtek ALC888
Alsa Mixer

Any help would be great. Thanks in advance.