[...]
My question is, is there a guide/HOWTO around that
addresses
the proper design of audio/jack applications or, is - in 2009 -
the only to know about that is by actually going through the source
code of successful Linux audio/jack applications ?
As a non-lad I just say: It is not that bad.
As of 2009, there are some guidelines:
The 'JACK API Reference Manual' and
'Writing Audio Applications With JACK - A tutorial/journal'
are linked from here:
http://jackaudio.org/documentation
This recent thread might be instructive as well:
http://www.linuxaudio.org/mailarchive/lad/2009/11/25/162459
best,
d