I know there are various threads regarding micro sd cards, but they served no help to me. Last week on October 21, I was listening to music on my sd card while I was on the train. When I reached where I was headed 15 minutes later, my sd said it was blank. I had 80 audio files on there, as I am a songwriter who just got approached by a major record label in NYC. Is there any program that can recover my audio files as well as pictures? I searched in the app store & one program found the media off of the sd card, but only showed me the titles of the songs. I was unable to listen to them, they opened as a text edit code file. Any suggestions would be grateful. I have a 2011 Macbook Pro