cerr << "mix_buffers_with_gain(): dst & src don't have the same alignment!" << endl;
mix_buffers_with_gain(dst, src, nframes, gain);
} else {
cerr << "mix_buffers_with_gain(): dst & src don't have the same alignment!" << endl;
mix_buffers_with_gain(dst, src, nframes, gain);
} else {