[Dave Petteruto] "However I tried to select all media at once and change them all at the same time with no luck. I seems that even if the media is highlighted only the media that is touched first or last by the cursor is the one that is effected."
Yes, if you have multiple media you have to do them one at a time. Once again, VASST Ultimate S Pro can fix this as well with one click. At some point you have to consider what your time is worth doing all of this manually and determine if it's a better investment to buy a productivity tool like Ultimate S Pro. ;-)
~jr
http://www.johnrofrano.com
http://www.vasst.com