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Full user review
"Behaves strangely and dangerously"
Nice feature set in principle.
Bad things happen. It causes iTunes to act as though it is being opened for the first time, showing Agree to Terms window. iTunes opens with preferences reverted. When moving playists PowerTunes froze and some songs became delinked from their files.
Very risky in my short experience, with the possibility to create havoc. I have a large library of songs and would never use PowerTunes again.