Streaming
Streaming is the term used for media files that, unlike conventional files that must download in their entirety, begin playing while they are being transmitted to the player. Why is streaming important? Time. With Windows Media Technologies, content authors can create, deliver, and play streaming media files in the Advanced Streaming Format (ASF). ASF files solve the problem of long download times by starting playback almost immediately, while the data is being sent. As the name streaming suggests, ASF files flow like a stream. Rather than picking up and sending a whole reservoir of data at once, ASF files send the first part of an audio or video clip down the "pipe" first. While that is playing, the rest of the data flows down, arriving in time to be played. To make sure playback isn't interrupted if logjams slow the network, the player collects a small backlog of data, called a buffer, before it starts playing. If the data keeps flowing fast enough, playback is continuous. Users only have to wait the few seconds it takes to create this buffer before viewing the file, regardless of whether the file lasts 30 seconds or 30 minutes.

Bandwidth
According to the Shannon-Hartley theorem, the data rate of reliable communication is directly proportional to the frequency range of the signal used for the communication. In this context, the word bandwidth can refer to either the data rate or the frequency range of the communication system (or both).

Bandwidth is a key concept in many applications. In radio communications, for example, bandwidth is the range of frequencies occupied by a modulated carrier wave, whereas in optics it is the width of an individual spectral line or the entire spectral range.

There is no single universal precise definition of bandwidth, as it is vaguely understood to be a measure of how wide a function is in the frequency domain. For different applications there are different precise definitions. For example, one definition of bandwidth could be the range of frequencies beyond which the frequency function is zero. This would correspond to the mathematical notion of the support of a function (i.e., the total "length" of values for which the function is nonzero). Another definition might not be so strict and ignore the frequencies where the frequency function is small. Small could mean less than 3 dB below (i.e., less than half of) the maximum value, or it could mean below a certain absolute value. In short, as with any definition of the width of a function, there are many definitions available, which are suitable for different applications.

Disc Space
Disc Space is the amount of space on a hard drive that you have to store information on.