hi guru, thanks for your reply! actually I prefer to install the software because I could change the sound after having recorded the tracks. me and the guy who is going to mix my future songs, we are still looking for the right sound for the guitars. I also prefere to install one (the right on!) version on my imac. i think the less needless software on my imac the more stable my system will run. I still hope someone here really knows which version I are allowed to use for free as a owner of the POD X3 or someone of line6 will answer my supportticket (after 7 days now!!). greetings, jet green