I am unfamiliar with SD and SDHC disk capabilities. I removed a formatted 8 gigabyte sdhc from a hand held scanner and inserted into the expansion slot of the sansa clip+ thinking it would be auto formatted, but the mp3 froze. Removed the SDHC disk which would no longer work in the scanner. Brought the mp3 player back up. Should only blank discs be used? Can they be erased and reused? How is the disk to be formatted? Can any brand SDHC disc be used in the sansa mp3 player?