timing alignment problem with fft power display

[drlava]

Hello, I have tested the wave music visualization on timeline feature with the Power option on a wave created from the default example show 'roboto.' the wav was created with winamp plugin wavewriter from winamp 2.64.

Problem:
At first, the effects are synchronized with the power spectrum display, however later in the song the effects become desynchronized with the power spectrum.

Is there a way to solve this?