Overall:
Your mp3 sounds kinda bad? Take this one:
http://www.mediafire.com/?ldetg8tz533inskOffset should be ~14040 for this mp3. But let the offset be at the very first beat at the song, so make it 325.
For the inherited sections, you can move them all back by 100ms, that works.
Don't forget to adust the preview point, too =P
Storyboard:
Scale down ground.jpg at the end so it perfectly fits in the playfield? Looks better imho.
And it looks a bit odd how black.jpg just suddenly disappears at 02:33:982 - . Make it fade out or so.
Hard:
00:35:125 (6) - Move forward 1/6
00:39:582 (4) - Lengthen by 1/6
00:51:393 (5) - Move back 1/6
01:12:764 (6) - Would sound better if you let it repeat like this:
http://puu.sh/nLv01:51:735 (5) - Move back 1/6
02:13:106 (6) - Would sound better if you let it repeat like this:
http://puu.sh/nLv02:51:050 (3) - Move back 1/6
03:02:478 (5) - Would sound better if you let it repeat like this:
http://puu.sh/nLvNormal:
00:20:039 (2,3,1) - Spacing miiight be confusing?
00:35:125 (4) - Move forward 1/6
00:51:297 (5) - Move back 1/6
01:11:125 (7) - Add New Combo?
01:27:640 (6) - Move back 1/6
01:28:325 (1) - Lengthen by 1/6
01:35:525 (3) - Move back 1/6? It's a bit ambiguous here.
01:51:640 (5) - Move back 1/6
02:11:467 (7) - Add New Combo?
03:00:840 (6) - Add New Combo?
Easy:
00:32:782 (5) - Move back 1/6
00:34:954 (3) - Lenghten by 1/6
01:11:297 (5) - Add New Combo?
01:12:668 (1) - Remove New Combo?
01:26:725 (3) - Shorten by 1/6
02:11:639 (5) - Add New Combo?
02:13:010 (1) - Remove New Combo?
02:44:897 (4) - Lengthen by 1/6
03:01:011 (5) - Add New Combo?
03:02:382 (1) - Remove New Combo?
EDIT: whee.