I've had my iMac two and a half years now and it's beginning to slow down and bog up with the all the video and Media I have saved to it. I have around 1000 tracks and 30 movies stored on it in itunes, a few thousand photos in iPhoto and endless hours of video and GoPro footage saved in iMovie, and it's hard drive is now full. So I wondered how you deal with so much media on your iMacs without deleting it, but still having it for use. The obvious answer I know, is external hard drives. But can you put video files etc. from iPhoto and iMovie onto an external hard drive, without removing them from easy access and use in iMovie and iPhoto itself? Any advice would be great, as I think my iMac's on the brink of collapse any minute right now!