You may be interested in some new software that ambrosia has brought out:
http://www.ambrosiasw.com/utilities/soundboard/
Soundboard allows you add all the effects (applause, laughter, any soundbite) to your shows and works really well with kJams, i tried it out tonight and had no problems.
I know this is something that is on Dave's list, but it makes an affordable stop gap till that time
Hope you find it useful
Paul
PS: I have no affiliation with Ambrosia software, I just found this a useful tool
