Plz try this:
@pause for a beat (or anythng)
@volume 0
(some dialogues or movement codes)
@volume 1000 (u may change the values)
@pause for 2
@sound (the sound u want)
This will reset ur current volume and make it audible
Hope it was helpful 
Plz try this:
@pause for a beat (or anythng)
@volume 0
(some dialogues or movement codes)
@volume 1000 (u may change the values)
@pause for 2
@sound (the sound u want)
This will reset ur current volume and make it audible
Hope it was helpful 