I have a 2XL and am trying to use the Google Play Music app for the 1st time since I have a Google phone. Transfered all of my music files onto the 2XL from a Note 3 during the initial file transfer process. However only about a third of the music files show in the library but all the files show in music folder if I connect the phone to the computer. The music files came from a SD card that was used on a LG and Samsung phone with no problems. The majority if the files come directly from purchased CD's. Does anyone know what is wrong?