Very helpful indeed Ninja - many thanks!

I think it's time I researched the cloud option more. It seems to be getting more and more popular, so it's obviously doing the trick. As long as its secure, might be worth trying it out. Can I just ask if you use the cloud as a back-up, and still watch day to day stuff from a physical hard drive, or you keep everything on the drive and access from there each time you want to?

Second mention of compression...is this something that can be done within the PC itself or only through specific programs?