Thanks so much for your reply. But what about a sound when you activate the button rather than selecting it? Can you please send me a project file on how to do it both ways????
cunhambebetupinamba@hotmail.com
Thanks in advance. :)

couple of different ways to do this, but the easiest is to create a short transitional video. The transition video starts out with a screen shot of the menu with the button in question selected (it's up to you whether you want to change the selected color set to the active color set in order to capture the screen shot). The transition video will start off with the sound you want and then will do something that takes you visually away from the menu (fade to black is the most common ending).

You specify that the menu button links to the transition video and then the end action of the transition video takes you to the actual clip you want to play.

An alternative is to create the transition as the beginning of the actual clip that you want to play.

I don't have anything that does this on tap; if I get a few seconds today I may be able to pull something together.

This would have been easier with DVD Lab Pro since it would cut down on the menus and allow better visualization of the project layout, but... DVDA 3 project and needed source files at

http://www.dvd-reflections.com/Source/sound-on-select.zip

Sound on activate is pretty easy, so I didn't do that one.