Activate the sound control on Linux

How do i activate the sound control on Linux?

You don't say which Linux, but in any event the sound for Unix (anyway) are ALSA, an opensource project. Follow the link below. You need to list your soundcard chip ID in a Terminal session. There are instructions.

A personal note, my SoundBlaster Live! card sounds great in WIN and it is because of the software that came with the card.

After I installed the correct ALSA recommendation I still had a teenie sound in my Unix distro. I then went and looked for any sound packages. I installed a mixer control panel. It helped the sound a little bit, and it added an option for 5.1 stereo or 2 channel. It's still not great, but it works.

http://www.alsa-project.org/