I can't say anything about the other programs, but flip4mac works well. I used it to get my things off of my PC to my mac. Worked great without anything bad happening.
I recently switched from PC to IMAC and I'm still trying to learn the different settings on my MAC. Right now, I want to transfer my movies from my PC to MAC and then be able to download those movies to my ITOUCH. I've been surfing the net and noticed visualhub, (to take movies and transfer them to my ITOUCH); flip4mac (to watch wmv files) and handbrake as a dvd CSS decryptor. My concern is downloading any malicious ware and/or spyware, etc. Would these be some of the best programs to use? I appreciate the help.

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