Little bit of polish.

* Create the app window with the correct size.
* Make the app window match the colors of the running NEXE (almost)
* Add some status messages when downloading
* Load debug/release nmf (based on reading the manifest...)
* Remove stupid delay in safemode print. (makes extracting nice and
  fast)
Mo betta audio.

Still isn't perfect, but it usually sounds good now. It seems like it
can get out of sync after losing/gaining focus, however.