By Computer Magazine I meant Computer Music magazine, which each months comes with a disk of bundled free software which is enough & more get you started on basic multitracking & sequencing - enough to turn your PC / Laptop into a multitracking studio & audio workstation with some cracking gizmos. The other thing you'll need of course is a half decent soundcard, such as the Behringer UCA202, which cost pennies but is the business. When I passed on a recent project to our record label's engineer for 'mastering' they said it was pretty much a done deal, and I wasn't trying that hard to be honest.

So:

1) Edit the voicetrack asrequired, comvert it to 24-bit WAV, import it into Channel 1

3) Play it back (over headphones) whilst recording flautist on Channel Two.

4) Edit flute track as required (compression / incidentals) and have fun with the mix.

Using Cubase & Ableton (of which Lite versions are cheaply acquired) you can duplicate either file and open them up on subsequent channels to treat differently by way of EQ & FX (reverb, echo touches) and to make the sound a lot richer.

For editing each track Audacity is good, but Sound Forge is better - it'll cost you £30 quid or so for the basic package, but worth every penny. If you run to an H2, then some decent editing & sequencing software is essential. Did the H2 come bundle with Cubase? I can't remember came with my H4 (on which you can multi-track of course but I never have).