Visualization media sound

Hello! I make music driven gameplay with audio analysis and want use futures of media player (playing several audio formats from anywhere). The problem is standard sounviz plugin and Exi’s soundviz doesn’t work with sound wave converted from media (calculation is always 0). I think reason is sound wave media don’t generate PCM data or plugins can’t work with data. If possible to fix problem, please tell in details, because I have very-very little experience with c++.