Bigger memory chip inside the player: Possible within firmware limitations (most likely 4GB max on those older Rockchips), but you will have to find a way to get the firmware on the new chip.
Bigger card: Nope, 4GB is the max.
Adding another card slot: Definitely no.
Bluetooth: Buy a mobile phone. Wi-Fi: Buy a PDA.
Preferably a real one not a cheap clone.
Audio amplifier: Of course it's possible, but you won't get it to fit inside the player.
Larger capacity battery: Possible as long as it fits.
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For my dreams i hold my life...
I miss my Meizu M6SL... Currently rocking a Sony Ericsson w595 on Samsung in-ear phones. Does fine, but it's not a chipod...
