How do you concatenate 2 sounds without delay

Okay try this:

  1. Look at the length of your intro audio file
  2. Play both audio files at the same time, but set the looping one to a super soft volume (.01)
  3. Use a delay with the exact audio intro length
  4. Start the looping audio file from the beginning again and change its volume to 1
  5. Stop the intro audio file