Great shout damintoel but unfortunately that’s not fixed it.Also, in addition to the above, are you playing files locally? On the internal storage or on an SD card? The skipping behavior suggests corrupted media to me, but that’s just a wild guess.
In terms of the skipping, I’ve tried 3 different memory cards that have all been scanned ok but hiby player doesn’t like them. The cards themselves are fine and have worked previously on this device as well as my dx300.
I tried the FiiO player app and strangely that doesn’t skip.
The real issue here though is that I can’t get any audio from all 4 outputs. Tried 2 sets of buds on 3.5 and 4.4 jacks and it’s silent.
The only way to get audio is via a usb c/3.5mm dongle or via Bluetooth.
Im veering towards a hardware issue