command line acvice

I recently installed Suse 9.2 and would like to become familiar with Linux and command line. My idea is to take on projects so that I can learn this in a hands on way, I am also open to suggestions. One simple project that I would like to start with is to get the sound enabled for my instant messenger. At present I have sound on most desktop applications, but certain applications are not included in the Control Center listing. My thought is to add the instant messenger to that list using the command line. Please advise. It's not the life that matters, but the courage we bring to it. jgtgru