In microbiology, the minimum inhibitory concentration (MIC) is the lowest concentration of a chemical which prevents visible growth of a bacterium. This is in difference to the minimum bactericidal concentration (MBC) which is the concentration resulting in microbial death as defined by the inability to re-culture bacteria.
What is iTunes Home Sharing? iTunes home sharing is a new way of conveniently sharing content on your gadget between five computers around. It enables you to stream photos, music, and videos among different computers.
Method #2 using separate playlists in one library. Method #3 using multiple iTunes libraries. iTunes Home Sharing now works between users on same computer-https://discussions.apple.com/thread/3865597. You could set up two completely separate libraries and share music via Home Sharing.Tunes: How to share music between different accounts on a single computer-http://support.apple.com/kb/HT1203 - relocating iTunes' media folder to a shared area but leaving separate library files-extra tip at https://discussions.apple.com/message/17331189.