I'm new to the Mac and the owner of a 13" Power Book which I love. However, I'm finding that whenever I do anything much on the Mac involving photos, video or music, the HD space gets eaten up rapidly. I've worked out that this is partly because the Mac has its own way of storing files. So, for example, if I have a folder called 'My Music', where all my music files are stored, once I import these into iTunes, it it all duplicated into the iTunes library, thereby taking up twice the space. I guess that the same thing happens with iphoto and imovie as well. I'd appreciate any advice for a Mac virgin on where to store various files to avoid this disc-devouring problem. I have searched a fair bit for advice, but only get pointed in the direction of software finding duplicates. I want to avoid the problem recurring and so am asking this question.