I am TL Lim, PINE64 community founder. The PineTime watch using NORDIC nRF52832, thos chip has i2s output and do you thinks this SoC good enough for an open source MP3 plater just like Sansa Clip?If the answer is positive, I can pass some PineTime devkit to RockBox developer to try out, then just redesign the schematic with audio DAC plus phone amp and a suitable touch screen case. Please note that this is just an exploration, we are currently fully loaded with various projects. P/S: don't mind the PinePod name :-)