- _out->read_at (crossfade_buffer_out, mixdown_buffer, gain_buffer, start, to_write, chan_n, read_frames, skip_frames);
- _in->read_at (crossfade_buffer_in, mixdown_buffer, gain_buffer, start, to_write, chan_n, read_frames, skip_frames);
+ _out->read_at (crossfade_buffer_out, mixdown_buffer, gain_buffer, workbuf, start, to_write, chan_n, read_frames, skip_frames);
+ _in->read_at (crossfade_buffer_in, mixdown_buffer, gain_buffer, workbuf, start, to_write, chan_n, read_frames, skip_frames);