Ugh, I'm an idiot, I only got reading the other posts of this thread now. Should have done that before posting. Apologies, and thank you so much. I've been so frustrated with this and wanted to through it out the window. 

Hi, I have a problem and I've looked everywhere but couldn't find a solution. I recently bought a Fiio X1 and a 64GB Generic Micro SD. After updating the firmware successfully and putting all my music on it I encountered a problem where only certain files would open. Some files, if selected...