[LAD] Document on using Jack Apps

[Paul Davis]

On Sun, Aug 1, 2010 at 10:46 PM, Arvind Venkatasubramanian
<mdu.arvind at gmail.com> wrote:

>   2072.829 frames     43.184 ms Inv

you have used a setting that produces 2048 frames of "software
latency", and your soundcard signal path (A/D etc) adds an additional
24 frames of latency for the output->input pathway (likely 12 frames
on the output path and 12 on the input, though this can't really be
measured precisely).

> The program does not seem to recognize the changes I made in the GUI
> parameters settings.

qjackctl does not have any effect on the settings unless you *also*
stop & start JACK. this will stop jdelay too.