Onboard audio, 5.1 - 7.1, or sound card

If you don't like the quality of the on-board sound, then add a separate card. It has no effect on the quality of the sound burned onto a cd - the quality of the ripping and burning software, and its settings sets the quality of the sound burned to the cd. E.g., 320kbps is about as high as you can do, while many rip and burn @192kbps. The higher the kbps, the better the quality, and the larger the output files (fewer tracks per disk).

Thanks, this helps me.
One more question please.
Intergrated 5.1 vs. 7.1 does not matter much if I have only two simple spreakers? Correct.