|||: This software can restrict other users to change volume other than the range you selected. |||: You can choose from 4 types to control volume and can control any sound card in the PC. 1. Keep speaker volume greater than the level you selected. 2. Keep speaker volume exactly that you selected. 3. Keep speaker volume no more than you selected. 4. Keep speaker volume muted. |||: Read the README file for configure and more.