i bought a flash based mp3 player of 512mb size.the 1st day i plug it in the comp shows 497mb of space and trasnfer few files.evrything is fine .i listen to songs.the next day i plug it in the usb,i cant upload any other songs.all it says is drive H not formatted,format now?yes or no?.since im not able to upload any futher file i say yes.to my utter shock the disk formetter shows the flash capacity ti be 245mb only!!!!i go on with format as i had no other choice....now the question is,how the memory size changed frm 497mb to 245mb??(the comp did show 497mb on 1st instance) secondly is there any way i can get back my memory space?? please help!!!