I copied some music from a cd onto my computer using Windows Media Player. They are now formatted in .wma format. I transfer music onto my phone and use a bluetooth earpiece to listen to it while I live day by day. However, my phone is not able to read this .wma format. I got a bunch of music already on my phone, in .mp3 format. Does anyone know how I can switch my music from .wma to .mp3?