The ornamental design for a mediaplayer, substantially as shown and described.
FIG. 1 is a perspective view of a media player showing my new design.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a rear elevational view thereof.
FIG. 4 is a left side elevational view thereof.
FIG. 5 is a right side elevational view thereof.
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines immediately adjacent to the shaded area represent the boundaries of the claimed design. The broken lines environmental are for illustrative purpose only and form no part of the claimed design. None of the broken lines form any part of the claimed design.