I have a Samsung sch520 cellphone that can play mp3 file if I put a memory card in it. I don't know much about how it works. So how many song can a memory card hold? or how many GHz can hold a 1000 songs? I have an iTunes library where I stored about 700 songs from my Cd's. How do I transfer those songs the memory card? Please give me as more details and as simple English as possible. Thanks.