I have a T Mobile My Touch phone, I bought an SD card for it because I also use it to listen to music since my ipod broke and I can't afford a new one just yet.

Problem is my music keeps getting deleted off my phone. I have no idea how or why but slowly, day by day my phone just rots away my music files till it hits zero. I have no idea why it keeps doing this and every week I have to add all my music back.

Does anyone know how to stop it or what to do? I always make sure to eject the SD card the safe way and I'm not playing with any of the files. I'm not sure what to do and google isn't giving me anything.