The ornamental design for a media displaysystem for a ski-lift chair, as shown and described.
FIG. 1 is a top rear perspective view of a media display system for a ski-lift chair, showing my new design;
FIG. 2 is a top plan view of the media display system of FIG. 1, showing the design;
FIG. 3 is a rear elevation view of the media display system of FIG. 1, showing the design;
FIG. 4 is an enlarged left side elevation view of the media display system of FIG. 1, showing the design, the right side elevation view being a mirror image thereof;
FIG. 5 is a bottom plan view of the media display system of FIG. 1, showing the design; and,
FIG. 6 is a front elevation view of the media display system of FIG. 1, showing the design.
Portions of the media display system shown in dashed lines are for illustrative purposes only and form no part of the claimed design.