Here's the current list of spells/songs/ninjutsu that I know are not in the game yet and their MP cost (only some of them.) The 2nd number is MP cost, and sometimes the level is added, when I could find that info. None of this info was stolen from anybody, it is all written clearly into the data files in FFXI.
# Bar- II series
# Cure VI 225
# Curaga V 450
# Holy II 200
# Dia IV 164
# Dia V 217
# Banish IV 159
# Banish V 272
# Diaga IV 180
# Diaga V 240
# Banishga IV 380
# Banishga V 563
# Protect V 84
# Shell V 93
# Phalanx II 99
# Protectra V 84
# Shellra V 93
# Fire V 272
# Blizzard V 285
# Aero V 260
# Stone V 235
# Thunder V 298
# Water V 247
# Firaga IV 418
# Firaga V 610
# Blizzaga IV 455
# Blizzaga V 642
# Aeroga IV 396
# Aeroga V 571
# Stonega IV 345
# Stonega V 512
# Thundaga IV 483
# Thundaga V 684
# Waterga IV 371
# Waterga V 541
# Ancient Magic II spells
# Gravity II
# Meteor
# Meteor II
# Poison III 72
# Poison IV 106
# Poison V 140
# Poisonga III 180
# Poisonga IV 248
# Poisonga V 314
# Bio IV 154
# Bio V 197
# Aspir II 40
# Break
# Virus
# Curse
# Tractor II
# Jubaku: San Level 80
# Dokumori: San Level 77
# Graviga 48
# Death 666 (coincidence? I don't think so.)
# Foe Requiem VII Level 87
# Foe Requiem VIII Level 97
# Horde Lullaby II (Wish it was before 40, don't ya?)
# Army's Paeon VII Level 95
# Army's Paeon VIII Level 115
# Mage's Ballad III Level 85
# Knight's Minne V Level 81
# Valor Minuet V Level 83
# Devotee Serenade Level 93
# Moogle Rhapsody
# Protected Aria (oO Protectra?)
# Massacre Elegy Level 79
# Carol II series (Don't feel like typing them all out.) Levels 80-90, 2 per song.
Here is a few videos of them. They're all compressed with Bink tools (
http://www.radgametools.com) into self-executing videos.
http://www.burnstalk.com/FFXIVideos/MeteorII.exe
http://www.burnstalk.com/FFXIVideos/CureVI.exe
http://www.burnstalk.com/FFXIVideos/FlareII.exe
http://www.burnstalk.com/FFXIVideos/ProtectV.exe
http://www.burnstalk.com/FFXIVideos/HolyII.exe
They're all about 15mb, since they're in really really high quality.