setting duration will not affect in/out if they are not explicit
Merge pull request #96 from neumic/develop

Fixed issue #94 "segfault when drawing Audio Track when Timeline has x offset > 0"
minor fixes for neumic.  maybe shouldn't end up in the upstream.
another cout commented out
swapped around some debug couts
added a track header background color
should keep my git diff's from being so clogged
initialized default xml filename to keep it from erroring on a setShowZoomer
fixed zoomer setup bug