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I suppose it might be possible in a way to transfer the pattern over to an ftm, but as far as the actual sound goes it would be impossible. The patterns in XM modules rely on samples to create a sound, as opposed to the nes' 2A03 that famitracker emulates. the thing about the 2A03 is that it generates the waveforms on the spot as opposed to using pre-determined, customisable ones (with the exception of the DPCM channel, which uses samples, though you can't change the pitch with the actual hardware).
Of course, if you were only talking about the patterns than I could imagine that being possible. I lack the knowledge necessary to tell you whether you can easily convert the patterns between the two formats, however.
It is possible to transfer notes from XM to FTM, and practically nothing more. Samples are obviously out of question. Volume envelopes - maybe, but you would want to edit them anyway. Effects aren't compatible, you can get only rough translation that would require major amount of manual corrections.
There is a minor problem with patterns of arbitrary length in XM vs. one length for all the patterns in FTM - converter would always use longest possible patterns in FTM and use D00 effect to cut them when needed.
There was one for S3M as well. You might be able to convert XM to IT, then to NSF.
I'm not sure why doing this would be wonderful though. What would you need it for? Do you have so much XM stuff you want to transfer that just punching in the notes by hand is killing vast amounts of your time?