Studio.9.Additional.Content 盘里有
1. LogicStudioLegacyContent
2. LogicStudioSurroundSpaceDesignerFiles
3. SoundtrackProSurroundSpaceDesignerPreSets
4. SurroundImpulseResponses
5. WarpedEffects
6. XtremeLibrary
从install盘装，在选安装文件时，只选
（在logic studio content 下）
space designer surround content
space designer warped effects content
logic pro 7 legacy content
extreme synth instrument content
Tools 栏全选
（包括impulse response utility)
总共大概2.8g