Sound Wizard
The Sound Wizard sets up your sound cards. Also see 'Multiple Sound Card Wizard'. They are both in the PuppyMenu, under the 'Setup' sub-menu.
Also on Wiki
Retrovol - graphic tool for sound configuration and volume
Alsamixer - terminal tool for sound configuration
Alsamixer - terminal tool for sound configuration
Related webpages
Updated Multiple Sound Card Wizard (April 2016, forum post)
Improved sound wizard announcement (November 2011, Barry's Blog)
Improved sound wizard announcement (November 2011, Barry's Blog)