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.
urgency - the state of being urgent; an earnest and insistent necessity necessity - the condition of being essential or indispensable hurry, haste - a condition of urgency making it necessary to hurry; in a hurry to lock the door