Mcffee: No, you cannot use it within Xara, sorry. It is a standalone program that can be used in conjunction with other programs, such as Xara. If you use it to install and remove fonts, your Xara dropdown menu should always reflect the fonts installed at the moment it is dropped down. (I haven't tested that on my current system, so I could be wrong.)

Ron: here is the trial version page, which can be found from the top menu on his site. The price was around 35 British Pounds, if memory serves. I have encouraged Tony to make it less convoluted to buy. I know the current approach is very off-putting, as your difficulty reconfirms. In spite of that, it is still a cool program.