Imported Sounds not playing

[Exile252]

Hey guys.

I'm having trouble getting my sounds I import into UDK to play when used in a AmbientSoundSimple it won't play.
I've tried using the sounds already in UDK, and they work. But it's just the ones I import.

Certain sounds have worked when being used on a interpactor, but not on the AmbientSoundSimple.

Any help will be thanked

[PrimitivePatriot]

Make sure you import them as .wav format, i had the same problem, turned out i was mistakenly trying to use mp3's!