Width
Each of the five bands in the 5-Band Parametric EQ has a width control that can alter the width of the frequency band in Octaves. The Width equalizer control adjusts the bandwidth of individual octaves and changes the range (higher or lower) that the frequency will be heard at. The width is the approximate range of frequencies that will be affected when the gain of that band is boosted or reduced. (e.g., if a band has a Center of 1000Hz, a width of two octaves and a Gain of +6dB, than a boost will be applied to the frequencies between 500Hz and 2000Hz and will peak at 6dB at 1000Hz.)
WMA
Windows Media Audio (WMA) is a compressed audio format created by Microsoft as an alternative to MP3. The WMA codec offers greater file compression than the MP3 codec, enabling storage of more digital audio tracks in the same amount of space when compared to MP3s.
