Priority 2
Use ffmpeg to convert unsuitable video files (how do we check this?).
-Add keyboard command for "top menu" in preview mode.
Add support for videos in preview mode.
Support more than 99 titles somehow (grouping them into titlesets won't help)
-Support more than 119 menus somehow.
Track down and fix/suppress the NS_BINDING_ABORTED (0x804b002) error that occasionally appears in preview mode.
Priority 3 (lowest)