Just wondering how do you know if the software is ACTUALLY compressing the data? I mean some of these titles are way over with all of the extras and subtitles but, when stripped out you don't really know if the movie and a single soundtrak would actually fit without any compression, so how do you know if it is compressing at all. I ask this because it segways into my next question. If you compress 10% or less is there any way to actually see the decrease in PQ even on a 100 inch projection screen? I am aware that if you compress a large movie to fit onto a single disc the compression would decreas PQ, especially noticeable on a large screen. However, a movie that runs over by 2-10 minutes that is compressed minimally..can ANYONE see the difference between this minute compression and no compression. Thanks.