Plot showing raw WAV
- Add demo WAV (Bach BWV 668, James Kibbie - http://freemusicarchive.org/music/James_Kibbie/Bach_Organ_Works_Individual_Chorale_Preludes/BWV0668)
- Changed 'params' to 'prop'
- 'data' is now an n-dimensional array, containing the pure wave data, format-agnostic