I'd agree with john-auvil, but with a 'but...'

Success depends certainly on the program version you have -- I found it was impossible in 14+ but 16 is supposed to be OK. Next you've got to have a computer with quite good specs for smooth playback, particularly over any more complex transitions. The Magix User Board has many threads where this is discussed: http://support.magix.net/boards/magix/index.php?showforum=113