i deleted few file to have more space and it showed like nothing deleted. no more space .
i decied to erase - im using mac . "Applications — Utilities ---- disk Utility ---- Erase " \ all this to clean space in the MP3 .
now it showing me this error . the mp3 is still opening in the mac desktop as- “UNTITLED”
Remember that when deleting files from the device while using a Mac, you must empty your trash while the device is still connected, otherwise the files will still be there. If you don’t, only the path to the files wil be deleted in the Mac’s Finder system.