Terms relating to audio files

Stereo - Reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound.
Channel - A path over which electrical signals can pass.
Track - A song.
Frequency - The number of times a sound vibrates per unit of time. Frequency is expressed in hertz (Hz), a unit of measurement equal to one cycle per second.
Hertz - The hertz (symbol: Hz) is a measure of frequency, informally defined as the number of events occurring per second.
Decibel - The decibel (dB) is a logarithmic unit of measurement.
Wav, mp3, aiff - Wav is the file extension of an Audio for Windows sound file.
MPEG-1 Audio Layer 3, more commonly referred to as MP3, is a digital audio encoding format using a form of lossy data compression.
Aiff, or Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data for personal computers and other electronic audio devices.