Thank you. I just had anther look at the GoFigure manual. I don't see any part of it that explains how to even play from SD. Looks like it's not a player.
Considering I'd only want the Poly to play from SD, it looks like Poly still might not be for me. I know overall there's been problems with Poly, but more recent models are supposed to be better. ..... I was still hoping that it might be worth a try.
I know there are apps to use that play the Poly from SD card. However I never pinned down if there was one for Android. As far as I remember the apps mentioned all worked only with Apple IOS.
I think eventually I will give in and buy a DAP for portable music. It seems the only way. (I avoid IOS like the plague, because I find iTunes impossible to work. Not that Poly would need iTunes.)
I use IOS and never ever use iTunes, there is no need nowadays.