SCORE!!! That did it. It bugs me when the solution is so simple and I have one of those DUH!, moments. Thank you, Andre BTW, before finding Power Amp I tried Media Monkey ... and what a P.OS. that was. Power Amp is precisely what I was looking for.
I loaded all my 6,058 songs and 62 playlists - took a LOT of time but they are all loaded. The problem I have is that I select a playlist, select a song in that playlist and then when the song finishes, the next song is from another playlist and the next one after that is from yet another random playlist. I have it set on shuffle, but why can I not operate and play the songs from the selected playlist only? When I disable shuffle, it still does the thing.