I read:
I would like to create a simple audio prg, but I need an audio library, = it would be possible to use PD as an engine to create another program, = like a library?
well I'd say pd is not ideally suited for your purpose
Otherwise, can you please suggest me an open-source audio library? I = need it works under linux and windows (that's why I thought of PD as an = audio engine).
well what is your program supposed to do in the end ? playback audio ? look at sdl or portaudio, read/write soundfiles ? then probably libsndfile might be for you , there a re lot's of other libs that do more specific tasks like fftw, libresample, stk, audioality and tons of others
regards,
x