My phone is not playing some music files and also when i load any external theme it shows that theme is corrupt. i was disappointed by this bcoz its only 4 days since i bought it. is it bluetooth problem ? in music files if we play sum particular file which is not proper it plays some parts of other songs which are also not proper. no matter from where you put that file computer, bluetooth, infrared, mms but that file is proper in the original source. plzz help me out.

Cell Phones - Sony Ericsson - K550i Cellular Phone