I got a new 64gb SD Card, put around 22gb worth of music on it and it only downloaded half. so then i deleted it all off and put the card in the phone and did it that way. and if i put too many files in at once it would tell me to disconnect my device and try again. So i had to download each file separate. now that its all on the last half of the music has a message piping up saying that it can't play the music. The card isn't full or anything so i don't know why? Any Ideas? (I'm new to android phones)