(Resolved) How to play couple of audio?

I am in a section with the audio and got stuck. When the level start the background music play and it is fine. But when the player touch the button to change weapon I have it to play another sound affect and then the background music stop and changing weapon audio start. I also have a section for when the player shoot an audio start to play but that will also stop the background noise. Does any one have an example how to fix my issues or what they have done to play couple of audio withought effecting each other.