added an audio filter API
woops, forgot the C-style exports
Added a 1:1 preview mode that is currently always enabled
Added a right-click menu item to toggle 1:1 preview mode
Recalculate the preview area when resizing the window
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into vse2012
Add AudioFilter.h to VSE2012 project files
Don't get stuck in an infinite loop of allocating memory