Good morning people, I tell you my problem. I have a PHILCO stereo with usb sd reader etc etc ... the issue is that I put a 2GB 4GB 8GB 16GB 32GB sd card or whatever it is and play it without any problem, likewise if I put a pen drive of any size and reproduce it without any problem. The drama arises when I want to put the mp3 player in the USB ... there it does not see or recognize or sticks. It is an 8GB MP3 ... I leave some photos to see what is the MP3. Thanks in advance...