horizontal or vertical bargraph audio level meter for Jack Audio Connection Kit

 A jkmeter displays both the true RMS level and the
 digital peak level.
 But can display stereo correlation too.
 .
 Jkmeter is based on the ideas of mastering guru Bob Katz.
 See <http://www.digido.com/bob-katz/index.php> and
 follow the links on 'level practices'.
 This is the type of meter you want for live recording,
 mixing and mastering