![]() The problem here is each SD card presents as a serial block of data, and if you are going to change that block of data, for it to make any sense you need to have a way of resetting the controller in the radio, causing the initial reading the drive to gather the content information, and inherently start over. I think maybe you bought this and its’s not what you wanted, but unfortunately I think without getting down and dirty with the electrons your going to find attaining the device needed is difficult, but not impossible though you might need to work on the presentation if you get it working but maybe buying one is nearer impossible? If you can think of any way, with all of these special needs, of connecting more than one audio source and that is very simple to switch between them I would be most grateful. Listening to music and recorded books is one of the few things that she can to to entertain herself. My sister is blind and mentally disabled. My sister is not capable of pressing one button to deselect a flash drive and then pressing another button to select a different flash drive. Just to make it more complicated, I suspect that any button that is pushed would need to turn off the connection between it and the MP3 player to the other two flash drives. The hub would need to have buttons so she could press one and listen to one flash drive. ![]() I hoped to find a USB hub that I could connect the 3 flash drives to so that my sister could listen to content on any of the 3 flash drives. My sister is unable to disconnect one flash drive and connect another one. But, again, the MP3 player only has 1 USB port. On three flash drives I put audio files of her favorite music, audio books, and Christmas music. I bought her a very simple MP3 player The player has one USB port so that you can plug in one flash drive and play music or spoken word.
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