- The sound code now handles restarting looping sounds itself. As far as

the rest of the game is concerned, these sounds will never stop once they
  have been started until they are explicitly stopped. If they are evicted
  from their channels, the sound code will restart them as soon as possible.
  This means that instead of this:
	if (!S_IsActorPlayingSomething(actor, CHAN_WEAPON, -1))
	{
		S_Sound(actor, CHAN_WEAPON|CHAN_LOOP, soundid, 1, ATTN_NORM);
	}
  The following is now just as effective:
	S_Sound(actor, CHAN_WEAPON|CHAN_LOOP, soundid, 1, ATTN_NORM);
  There are also a couple of other ramifications presented by this change:
    * The full state of the sound system (sans music) is now stored in save
      games. Any sounds that were playing when you saved will still be
      playing when you load. (Try saving while Korax is making a speech in
      Hexen to hear it.)
    * Using snd_reset will also preserve any playing sounds.
    * Movie playback is disabled, probably forever. I did not want to 
      update the MovieDisable/ResumeSound stuff for the new eviction
      tracking code. A properly updated movie player will use the VMR,
      which doesn't need these functions, since it would pipe the sound
      straight through the sound system like everything else, so I decided
      to dump them now, which leaves the movie player in a totally unworkable
      state.

June 26, 2008
- Changed S_Sound() to take the same floating point attenuation that the
  internal S_StartSound() uses. Now ambient sounds can use the public
  S_Sound() interface.
- Fixed: S_RelinkSound() compared the points of the channels against the
  from actor's point, rather than checking the channels' mover.
- Changed Strife's animated doors so that their sounds originate from the
  interior of the sector making them and not from the entire vertical height
  of the map.


SVN r1055 (trunk)

src/s_sndseq.cpp

@@ -269,10 +269,6 @@ static FRandom pr_sndseq ("SndSeq");
 
 void DSeqNode::SerializeSequences (FArchive &arc)
 {
-	if (arc.IsLoading ())
-	{
-		SN_StopAllSequences ();
-	}
 	arc << SequenceListHead;
 }