Actually John, 44.1 khz refers to the number of samples a second that are
being taken of the sound. In this case, 44,100 samples a second are being
The bitrate is different, it would refer to the actual number of bits passing per second, to get it, you would multiply the sample rate by the bit sample size by the number of channels. For a 16 bit 44.1k sample rate in stereo, this would give you just in excess of 1.4 million bits per second. "The actual number is slightly less due to several technical factors.
You can tell how compressed an mp3 file, for example, is by looking at the bit rate. For example, a 128k/second bit rate compared to the 1.4 megabits persecond of raw audio means that there is about a ten to one compression.