Phonon

TODO

   * High level capture API
   * Low level PCM I/O
   * API to allow applications to implement their own effects (independent from the backend)
   * encoding to files (or any QIODevice)
   * Hardware Mixer API
   * kded module to handle tasks like:
         o react on plugged new (never seen before) media device
         o manage software volume controls
         o implement policy like muting/lowering volume of selected applications/categories depending on special events (e.g. incoming call)