Sounds on buttons

hi

I have here in my animation several buttons, and I´d like to add the same sound to all of them. I have to do it manualy or there´s another way to do this?
How do I do in a way to same bytes?

thanks

Import them into flash, open the library and drag onto your button.

How do I do in a way to same bytes?

I don’t understand. :hangover: