I bought the windows version of logos and i just bought a mac i was curious if i can change it to the mac beta version?
Yes you can Just download it and log-in, and it will do the rest (syncing all your books, markups, files, etc.)
You sure can, just download the Mac version of the engine from here: http://www.logos.com/logos4mac.
Logos licenses you to use their software to use on any machine, PC or Mac, so long as you are the user.
By the way, using your email as your user name in a forum puts you at risk for spam-bots to harvest it. To learn how to change your user name, go here: http://wiki.logos.com/Changing_Forum_Display_Name
