Music plays faster than usual and everymusic file has made many copies of itself?

The day after i downloaded lots of songs onto my meizu it started acting weird. First of all the songs played a little faster than usual but it wasn't that big of a difference. Also, when i looked at all my songs each song had at least 4 copies of itself and some even had eight or nine copies of itself(it didn't take up any space but the player did say i had about 2 thousand songs even though i originally only had about 400). When i looked for my songs in the browser though it only had one copy of each song. Does anyone know how i can fix this? I already tried resetting it but then it took forever for the music library to update and it updated each song like four times before it finally stopped.

Reformat and put all the music back again. If it does the same thing after that, its flash memory is bad and you'll have to return it.