I have sound, in videos etc, but music does not function. I tried a few apps, even vlc. I downloaded some of my music from the computer to the android device. I put it in the "Music" folder. The apps I tried seem to find it, but when I tap "Play" I hear only the first note and then it stops. I have flac and mp3 files. Is it possible I put too many files and overloaded the device? How can I fix this, please?