[RocketJSquirrel]

I just purchased the X3, and the pre-installed flac files and mp3 files work well.  However, I can't get 44.1 24-bit flac files from the Beatles USB Apple to play at all.  I just get an error message that says, "File not supported."
 
Does anyone have any ideas on what the problem could be and how to fix it?  
 
 
Also, are there any step-by-step directions on how to install the X3 downloads?  The directions I've read are incomprehendable.
 
thanks, RocketJSquirrel