Thanks for the thoughts, Andre. Sadly, there is no hardware menu key. And there are no three-dots-in-a-column icons on any screen. I've been through the tablet settings and can't find anything related. There is a hardware key that allows power off, reboot, profile, and airline mode, speaker on/off, and on other icon that seems only to turn off the selections. There is another hardware button that pulls up the volume control, with another icon that pulls up speaker, alarm and one other level. It is sounding like Poweramp is incompatible with my hardware. That is a surprising answer.