* Fixed secret elevator
  sound sequence in e1m1c.

* Fixed piston sounds sequence
  near C4 in e1m2a.

* Fixed duplicate elevator
  sounds near surgeons in
  e1m3a.

* Fixed missing elevator sound
  near end of the map in e1m4c.

* Fixed scripted sequence at
  the beginning of e1m5a.

* Fixed sounds on elevator
  near end of the map
  playing twice in e1m6b.

* Fixed crusher seqence sounds
  in e1m7a.

* Fixed elevator sequence
  sounds in e1m7b.

* Fixed typos in sound file
  names in e1m7b.

* Fixed spiral emerging after
  Stavros's death playing
  stopping sound too early
  in e3m3c.

* Fixed main elevator sequence
  'stop' sounds in e3m6a.

* Fixed crane sequence sounds
  in cave near the end of
  the e4m2a.

* Fixed missing sounds and a
  typo in the broken elevator
  in e4m4c.

* Fixed a button lagging behind
  the moving bridge in e4m4c.

* Fixed sounds for start and
  glass elevators in e4m6a.