Binary package “libphononexperimental-dev” in ubuntu cosmic

multimedia framework from KDE - experimental development files

 Phonon is the Qt 4 multimedia API, which provides a task-oriented abstraction
 layer for capturing, mixing, processing, and playing audio and video content.
 .
 This package contains the development files needed to build Phonon back-ends
 or internal applications which need the Phonon-Experimental library.
 Third-party applications should not depend on this library. Please read
 README.Debian if you are considering a build-dependency on this package.