SONGBIRD,
Sometimes I can't see the forest for the trees.

My apologies.
I got focused on converting a WAV file to CDG on the hard drive, and something's been nagging at me all day . Light bulb just came on.
As you've seen from other posts, all you have to do to convert a CD .WAV track to CDG is import it to the hard drive as a CDG, then burn it to a disc and it will play as a cdg.
Well....If you don't mind wasting a cd, or if you have a CDRW(re-writable cd) then go to Microstudio CUSTOM ASSEMBLY, select the .WAV file and burn it to a cd.
Then go to Microstudio IMPORT and import the.WAV file back to the hard drive making sure to have CDG selected as IMPORT FILE TYPE, not .wav.
The new file now is a cdg file you can mix with regular cdg's and burn to a cd.
Much, much simpler if you don't mind a wasted cd, or have a CDRW.
Take care,
George