Downloaded .avi files too big for 4.7 GB DVD-R. I've got a number of downloaded .avi movies around 700MB in size clogging up my hardrive and want to burn them onto DVD-R. Is there any way to compress them so that they'll fit on. If not, can I get bigger DVDs than 4.7GB, 'cos that's all they had down my local Dixons. I've got Toast Titanium but that doesn't have a compress option (obviously). I tried downloading ffmpegX but it's quite confusing with loads of options and don't even know if that's the right program for me. HELP!