I'm back on track and needing help

[ObsidianLegion]

First of all, thanks to those that have helped me regain my enthusiasm.

rybray, Juby & Obliviator27 - You guys are awesome!

Now, to the point:

Realising that minecraft isn't as rewarding as making a custom...I return back to my work.

When I do that, I see that I'm stuck with a script problem.

Blowing up a barrier.

I know the basics of what I need to do. Something like:
-Get a combine callback to mix two chemicals
-Use animations for putting the mixture down. (Like in the original storage level)
-Timer for explosion and adding the discreet sizzling noise the potion makes when it's about to blow up :3
-Make the barrier disappear to smoke and make the broken barrier appear as a realistic replacement.

I know how to:
-Get the combine callback
-Making timers
-Making the barrier disappear, but not to smoke. And not to a big BOOM!
-Making the broken barrier appear for a realistic replacement.

I want to know:
-How to get and add in that sizzling noise for the explosive chemical
-Making things disappear to smoke
-Give the player damage/kill them if they are too close
-Implementing that awesome boom noise

I basically want to know how to do this and make it appear realistic. I did refer to the Storage.hps (The one with the same functions) and it's just a big mess for me.

Please help!