There are a couple sounds I want the catcher to play in succession so that it makes a tune. How can I set this up in Hammer? I know at least I can stitch the sounds together in a 3rd party program, but is there a way to do it without the middle man?

You mean play randomly from a list of sounds? or just playing sound 1 then sound 2 etc?
In its OnPowered event you can play sound1, then sound2 with a delay etc, using a sound entity (ambient_generic for example)

Oh ok, I know what to do now. I just have to figure out how long the sounds are.
Thank you.