mcdhu,
The old SB16 Emulation is the leftovers of the old DOS days. In order to play the old DOS games, you needed to emulate the DOS functions of the sound card. The card most of the old games supported was the old SB16.
Unless you are playing an old DOS game or you are having sound problems during your computer's normal operations, I would not worry about it.
Take Care,
Richard
P.S. If you were to play some old DOS games, it was better to use a DOS Boot Disk (with the SB16 Emulation and the Games Expanded Memory Requirements on it) to boot the computer and then access the old game.