Because I think you guys need them. You guys are all using the same sound pack - I've heard this one freakin' click sound in probably 300 flashes!
So I made a few click, button, & powerup sound effects. There aren't that many right now, but I'm gonna make more. Lots more.
You can download them and chop them up to your hearts content. If you want a handy sound-chopping program, check out Audacity. It's free!