[CM] beta4 with oscpack

[Heinrich Taube]

beta4 with ospack on all systems is available. would be grateful for osc testing with real data

mac:
	http://camil.music.illinois.edu/software/grace/Grace-3.9.0-beta4-osx.zip
win:
	http://camil.music.illinois.edu/software/grace/Grace-3.9.0-beta4-win32.zip
src:
	http://camil.music.illinois.edu/software/grace/cm-3.9.0-beta4-src.zip

1 oscpack should build  everywhere now (i create a static library and that seems to fix the strange linking problem)
2 audio file player now handles ogg, flac, mp3, and windows media format . 
3 fixed a few display bugs in the instrument browser added export buttons for restrings instruments do disck
4 Added "Export" items to all the example menus and the instrument browser. these items let you easily restore files from grace's internal zip into your file system
5 Added Help>Scheme>Extras that Ill start adding things to. right now its got Sean Ferguson's acoustic dissonance sorter (which is actually quite cool, it lets you rank/sort chords by their acoustic dissonance according to critical band their, see comments at top of file)