Zuki,

If you've already recorded the midi files and all you want to do is add vocals, then burn them on CDs, you can do the job using Goldwave, SoundForge XP and a number of other great programs. Goldwave is shareware and considered among the best by a lot of professional users. You can download the program at www.goldwave.com and it comes for an easy to follow, built-in users manual. If you having trouble with the hook-up, you can find instructions at http://psrtutorial.com/ under the intermediate tab, then click on recording. This will save you about $350 to $550 or more and really produces excellent results.

Good Luck,

Gary