Mute unit sound

Is there a way to mute unit sounds (temporary) in a trigger (like there was in staredit)?
I want to make a building with a custom sound when the player selects it (with a play sound trigger), but in order to do this, the original "what" sound of the building has to be muted.. any way to do this?

I'm currently solving this problem by basing my structure on the pig farm, as that one doesn't have a selection sound, but it isn't a really convenient solution.