Listen Current:  Maps a key that will play the currently selected sound effect on your speakers only.

Play Current:  Maps the key that will play the current effect out to others.

Next:  Maps the key that will change to the next sound effect.

Previous: Maps the key that will change to the previous sound effect.

Mappings

On:   Activates the current mapping so when the key is pressed the sound effect plays out to others.

Keys: Mapped key name.

Name: Name of the effect.

Change:  Push the "set" button to assign a key to the effect.

* You can right click on a sound effect and select "Play Current Effect" to hear the effect.