To have the best sound, you should first make sure all sound clips are the same volume. To do this, open all the sound clips you want to put together. resave them as “.wav” to have the best quality and so you do not change the original. Once all the clips are resaved, open the volume control tab which can be found on the left hand side. It is the bottom tab. Then, drag all of the sound clips into the box and click match sound. It will give you the automatic volume, but you can change the volume if you have a preference. Simply click ok when after you choose the volume and soundbooth will proceed to math the volume of the selected sound clips. To be safe, you should save the clips again after the change is made.