Ah-ha!
Great advice again.
Ok. I just went to my Mac (source for the mp3s) and used ITunes to "select all" then "change artwork" then picked my preferred image (identical to the "Chart of the I AM Presence" logo here in my Poweramp user profile), and it assigned that same image to ALL the mp3s in my library; Then synched all the mp3s and the iTunes playlist . . . FROM my Mac Mini . . . TO my android phone . . . using 'Isyncr' app ( http://www.jrtstudio.com/iSyncr-iTunes-for-Android ) . . . then "RESCANNED" in PA . . . all done! Now all tracks have my very favorate image.
Thanks again Andre
You "da man".
Jim