From Microsoft: Windows Media Player allows you to play audio and video files locally stored and streamed from the Internet. It includes a visualizer, a jukebox, a media guide, an Internet radio tuner, a CD burner, and support for countless media formats and various external devices.
imperative. adj. 1. extremely urgent or important; essential. 2. peremptory or authoritative: an imperative tone of voice. 3. (Grammar) Also: imperatival grammar denoting a mood of verbs used in giving orders, making requests, etc.
In English, the imperative is formed using the bare infinitive form of the verb (see English verbs for more details). This is usually also the same as the second-person present indicative form, except in the case of the verb to be, where the imperative is be while the indicative is are.