nwz-s764bt usb charger compatibility

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Sony used to force you to use their proprietary software. I hadn't heard about the need to use their proprietary charging hardware but it wouldn't surprise me if that were the case.

Fortunately they've come to their senses and cut out that silliness. Sonic Stage has been dead for years and every Sony I've had across the last 4 years happily charges with any USB charger that supplies the standard 5 volts I've connected.