Hi Brian
I'm using a Korg Micro Arranger a Korg iH harmoniser into a Zoom R16 recorder.
Reverb and Chorus are from the R16, the lead vocal into a mono input, the harmony into a stereo input and the keyboard into another stereo input making 5 tracks in all.
To do any editing you can import the 5 wav files into Audacity carry out any tweaking then export into a MP3 file.
Kind Regards
Col