do not download this application if you have a macbook os x 10.4.7. It contains a .exe named nero that might cause your computer to shut down unexpectedly at random intervals. I am not trying to single this software out, but when i ran clamxav(anti-virus software) it singled out the nero.exe and other files contained in the folder as "viruses". i believe this is what has been causing the random crashes. i found this software on the mac homepage.