[Flipcjl]

Hi all,
This is my first post here and i'm going to sound like a right newbie now. I listen to alot of music on the go, so bought myself a "micro SD HC 10 64GB"
So i transfered all my data (music, photos, ETC) but when i went into the "walkman" app i got a message saying no music. Is there something i'm doing wrong?
all music played fine before i did the transfer, it just seems to be since i moved them to the SD card. File types i'm using is ( .Wma .MP3 .M4A)

Any help is much appriciated