M240 Hidden Files

Hi, I has just got an m240, I dragged some wma into it, they show up on m240 under albums and artists but won’t play unless I go play all, it only plays the fist tune and repeats it, if I shuffle them it still only plays new first tune. I can’t see any music when connected to PC. Can I format player to clear it of music and start again. Or any suggestion please Thanks Trouter

Can anyone help with explaining the process of clearing my player so that I can refill it with a new batch of songs?

watch the how to vidos i have linked below. They have a video on “formating your player in msc mode”

Thanks, Eniga everything working after using Format.