Get Help & Advice on Installing & Using Karaoke Software by Power Karaoke

I know a number of people have posted a simiar problem but i really need an answer... please!! if i use the trial version of cdg 2 avi, i have absolutely no problems. However, once i register the software i cant get any sound in the converted file. Instead of 50meg (ish) files, im getting 1(ish) meg...