Without knowing whether nearby circuits are already loaded to permissible limits or not, I would have to recommend laying a new cable from the breaker panel to the point where you want the new outlet. Depending on the house and the decor, the new cable can be paper thin under-the-carpet steelbelted cable, surface mount flat conduit, or fished through walls or ceilings.
If there is an outlet nearby, that could be converted to an X-10 switched outlet by simply replacing the outlet and installing an X-10 switch anywhere else. There does not have to be a connection between the switch and the outlet. An X-10 switch puts a signal onto the normal AC current and the far away outlet responds accordingly. That way you can turn the track lighting on and off from any convenient location, without have to install wiring between the switch and the outlet.
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