hello everybody. i have a 1gb mp3 player. i can copy and paste music onto it no problem. the problem is that when it gets about halfway full, i am told via a windows error message 'cannot copy (enter song name here) : parameter is incorrect'. i have no idea what i should do to solve this. i have checked the removable media properties which tells me that there is still half of the space empty. how do i fill this space?
thanks

ps. it came with a disc that has a format option but i didnt want to just go ahead and format it in case it formats the programs used to play the music. this would be most upsetting.