Log Message:
Update sweep to 0.8.0.  Changes in this version:

* a new monitoring subsystem for use in DJing and live performance.
  Users with two sound cards can use headphones for monitoring, to
  prepare mixes and cue samples without disrupting the main output.

* A usability bug was fixed in keyboard playback controls

* the Italian translation of the user interface was updated by
  Yuri Bongiorno.