、。
Get a new skin for Windows Media Player and change the player's appearance.
Literal
Windows Media Player [gen-の] new [attr-な] skin [obj-を] obtain-[and-し], player [gen-の] appearance [obj-を] change-[try-てみ] [let's-ましょう].
A how-to instruction. 入手する ('to obtain, to acquire') is a formal Sino-Japanese verb, common in technical contexts. 外観 ('external appearance') is a compound — 外 ('outside') + 観 ('view'). 変えてみましょう combines ~てみる ('try doing') with the polite volitional 'let's try X.' The sentence is typical of software help documentation in Japanese — friendly encouragement to use a feature.