Arpicade or PC with jpac?

[rydin4life]

I have a spare cabinet that I put a Pandora Box DX in, but I don't really care for it and was going to go the route of Arpicade or a MAME PC with Launchbox via a jpac. The Arpicade solution seems by far the easiest - basically plug and play, add the kick harness for buttons 4,5,6 for each player and that's it. Of course, this doesn't get me some things I'd like including Killer Instinct, Primal Rage II, etc. which made me thing of using a PC with Launchbox and a jpac. This brings me to some questions:

- What's the best way to get a 15khz signal out of my PC and into the jpac so I can use the CRT?
- How would I power on the PC using the same cabinet power switch which currently powers everything?
- I read that sound is not handled by the jac so would I need a line from my PC to an amplifier and then from there to the cabinet speaker?