I've improved the control over the output volume on playback. The Volume Control slider in the Playback Controls panel now enables you to increase or decrease the output volume. If you use it during playback then expect a delay between adjusting the value and hearing the effect of the adjustment because a certain amount of the output has already been delivered to the output buffer. I have set the range by trial-and-error, using the sound font that I normally use. I would be grateful if others could test with their own setup and report back if the range of variation is not wide enough/too wide.
Richard
