I don't have MM-14, but I would think there is.

In MM-15, you can load your song into the arranger.  Then, click on the Templates tab.  Under Templates, you will see one called "Karaoke" (see photo).  Simply click on the Karaoke icon and drag it into your track.  Give it a few seconds for it to work its magic - there should be a red progress bar at the bottom of the screen.  That should do it.

Be aware that the Karaoke feature does not always work with 100% effectiveness.  That may depend on the frequencies and complexity of the vocals involved.  Deeper voices do not seem to be eliminated as effectively.  At best, you may still have some remanent artifacts.

Also, since it is basically a filtering function, the frequencies of the remaining track will also be altered.