Digital camera problems.?

I have a Samsung Digimax D103 camera. Whenever I connect it to my computer to transfer the pictures to it and then disconnect it, I always find that the memory on my memory card is much less than what is was before. When I reconnect it to my computer, I find that all my music files are on the memory card and I have to delete them. This happens everytime and I don't know why. Maybe I am being silly and missing something obvious, but if anybody can help that'd be great. Thanks.

You probably have some (poorly-designed) software on your computer that thinks the memory card is a music player and automatically copies your music to it whenever it sees it.

there seems to be a error i suggest you take it back and replace it ASAP!

your music files may be in ur picture file..it happens sometimes...check all unknown folders and even known folders to make sure.