> When the display says SHIFT 0.4 msec LEFT
>which channel is being delayed?

That's not relevant, really. The sound should appear to be centered more to the LEFT in this case. The end result is relevant, not the means. To do this, the software can either delay one channel, or speed up the other channel.

I guess, to shift the centre to the left, it must be delaying the right channel, or speeding up the left channel.

-ml