I have the same problemdownloading music files to my mp3 player.
I have a samsung YP-Q2 mp3 player and using windows media player i have synced some music. The files are shown on the player by artist, title, etc....however, when i go to play them a "file not supported comes up. I've formatted the mp3 erasing memory, reset it, updated library, etc and it still does it. I am going crazy here....any suggestions???

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