My wife and I have 1 iTunes account and 2 user IDs on our iMac. I have been putting our music into a shared folder which iTunes points to for both users. It works fine until there is an iTunes update which breaks it everytime. I get write permissions errors. The only way to fix is rebuild the library.
It is a complete failure by Apple that this hasn't been fixed in years.
It is a complete failure by Apple that this hasn't been fixed in years.