Enhancing madplay to speed up audio books and podcasts

I would like to enhance an audio book player called "daisy-player" to
allow the user to control the speed.  It uses madplay for all of it's
sound output.  I wrote a simple package called "sonic" that speeds up
speech with low distortion.  It's in plain ANSI C, and works well on
ARM CPUs with no FPU (tested on Android).

Since sonic is not yet included in Debian, I recommend just adding two
files to the madplay source: sonic.c and sonic.h.  I would be happy to
make the initial edits to incorporate sonic speed up in the output
stream processing of madplay.  Would such an enhancement be of
interest?

Thanks,
Bill