More use of *_MUSIC macro wrappers.

data/campaigns/Eastern_Invasion/scenarios/19_Epilog.cfg

@@ -9,7 +9,8 @@
 
     {DEFAULT_SCHEDULE}
 
-    music=knolls.ogg
+    {INTRO_AND_SCENARIO_MUSIC knolls.ogg heroes_rite.ogg}
+
     [story]
         [part]
             story= _ "When Mal-Ravanal fell, the living creatures under his banner broke and fled; the undead simply collapsed like puppets with their strings cut. As the lich's death-scream echoed in the air, a vast and louring column of shadow arose from his corpse like smoke from an unclean fire; then it divided fivefold at its height, reaching for the heavens like a clutching hand.
@@ -23,8 +24,6 @@ Men let weapons fall from nerveless fingers and horses reared in terror as that
         [/part]
     [/story]
 
-    {SCENARIO_MUSIC heroes_rite.ogg}
-
     [side]
         type=Lieutenant
         id=Gweddry

data/campaigns/Liberty/scenarios/05_Hide_and_Seek.cfg

@@ -651,12 +651,7 @@
             side=3
         [/filter]
 
-        [music]
-            name=vengeful.ogg
-            play_once=yes
-            immediate=yes
-            append=no
-        [/music]
+        {INCIDENTAL_MUSIC vengeful.ogg} 
 
         [message]
             speaker=Harper

data/campaigns/Liberty/scenarios/09_Epilog.cfg

@@ -5,6 +5,9 @@
     {NO_MAP_DATA}
     turns=10
     next_scenario=null
+
+    {SCENARIO_MUSIC traveling_minstrels.ogg}	# Talk-only scenario
+
     [story]
         [part]
             music=revelation.ogg
@@ -44,15 +47,12 @@
     [/story]
 
     [event]
-        name=prestart
-        [music]
-            name=traveling_minstrels.ogg
-            immediate=yes
-        [/music]
+        name=start
         [endlevel]
             result=continue_no_save
         [/endlevel]
     [/event]
+
     [side]
         side=1
         type=Highwayman