foobar2000 1.1 SDK
Copyright (c) 2001-2011, Peter Pawlowski
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 
Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation or other materials provided with the distribution.

Usage restrictions:
It is illegal to use this SDK as a part of foobar2000 components that operate outside of legally documented programming interfaces (APIs), such as using window procedure hooks to modify user interface behaviors. We believe components doing so to be harmful to our userbase by introducing compatibility issues and dependencies on undocumented behaviors of our code that may change at any time without any notice or an update to the SDK which would reflect the change.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.