Menu won't work on new m250

Just got this 2 gb mp3 m250 today.  my pc wouldn’t recognize it so after reading here, I tried to get the menu to go to settings so I could get to the usb settings to change it to msc.  Problem is that when I use the menu it will only give me play music click it again and it goes to no files,  back and forth.  Is there any way to get past this that I am not seeing.  the controls don’t seem very friendly.