Legal.

The DSP pack uses code of FFMPEG licensed under the LGPLv2.1 and its source can be downloaded here.

The DSP pack uses code of Libflac/Tremor licensed under the Xiph BSD license.

The DSP pack uses code of Wavpack licensed under the BSD license.

The DSP pack uses code of Libsndfile licensed under the LGPLv2.1.

Copies of all licenses are included in the DSP pack and readable via the "Show Licenses" link below.