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Stepping Away from Streaming with the Snowsky Echo Digital Audio Player
(gardinerbryant.com)
This is a most excellent place for technology news and articles.
I have a teeny tiny 2015 smartphone with a headphone jack, an SD card, the SIM removed, and a copy of Foobar2000 installed. It was never fast enough or capacious enough to be a very good portable internet portal, but it runs something simple like Foobar2000 very, very well. The battery still lasts longer than the one in my actual phone does. And it was (in a sense) free. Reduce Reuse Recycle.
I have a Sharp Wish 2. It's just as you say.