I have what I believe are good sounding backing tracks which I have made using Pg's Music Realband. I have mixed midi and realband sounds to compile most of my backing tracks for the most part from midi files. I have used appropriate realtracks and the midi sounds from cakewalk, which I find to sound very much like real instruments. Through my Pa and live they sound full and well mixed. However, I have found a need for demo's to help market. On a low end sound system they loose all there fullness
and the mix changes.
I was simply looking for an explanation and any help anyone might offer.
I now believe that in order to make my existing or new files sound good on different audio systems I will need to master them.
I was simply ignorant of the fact that you had to do more than mix.
Thanks again for all yout input.