[CM] fun with CM + Linux

[Tobias Kunze Briseño]

imho there should be no hardcoded defaults whatsoever, for any output
syntax.  instead, output data should be only generated and placed in a
pre-defined location (a file, dac, port, socket, whatever), in some
pre-defined manner (all at once, chunked, ring-bufferd, whatever).
the user should then see to it that a suitable renderer is called upon
that data.

of course, as a matter of convenience, a hook mechanism should also be
provided that allows the user to have his renderer called
automatically.  and here is where defaults can make sense, in addition
to direct specification.

likewise, a global preference should be provided to indicate whether
or not external data such as the user's and the system's settings for
specific, pre-defined MIME types (e.g., audio/midi) should be perused
to derive hook definitions.

finally, to assist the user in setting up a hook, sensible, hardcoded
'default' values could be offered as starting points for user
adjustments.  this, however, is a user interface issue, not an issue
of functionality.