Why my car's audio player doesn't play some mp3s from usb stick that I don't play them too often?

Its a dedicated 8GB usb stick for my cars music so I keep it plugged in the car untill I want to add/change something. My Mp3s bitrate, directory names-tree and the 8GBs are supported by the cars player. The files were playing fine when I firstly plugged in the usb to the car. When I choose something to hear that I havent listen to for a week or 2 it shows the file in the car but it doesnt play! It just skips it and go to the next playable file. Often skipping hole albums that I m not listening too regularly (lets say 2 weeks). Im not having any issues with the usb stick when plugged to the pc - all mp3s are there and playing fine. Thank you for your time.
Asked Sep 10, 2013

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