diff --git a/Makefile b/Makefile
index 2a13332..45a8b71 100644
--- a/Makefile
+++ b/Makefile
@@ -27,6 +27,7 @@ asm:
 	cp res/work.po "$(BUILDDISK)".po >>build/log
 	cp res/_FileInformation.txt build/ >>build/log
 	$(CADIUS) ADDFILE "${BUILDDISK}".po "/MILLION/" "res/PROGRESS" >>build/log
+	$(CADIUS) ADDFILE "${BUILDDISK}".po "/MILLION/" "res/PREFS" >>build/log
 	$(CADIUS) ADDFILE "${BUILDDISK}".po "/MILLION/" "build/MILLION.SYSTEM" >>build/log
 	for f in res/levels/*; do $(CADIUS) ADDFILE "${BUILDDISK}".po "/MILLION/" "$$f" >>build/log; done
 
diff --git a/res/M.ERROR b/res/M.ERROR
index 212ed1a..0c0d73a 100644
Binary files a/res/M.ERROR and b/res/M.ERROR differ
diff --git a/res/PREFS b/res/PREFS
new file mode 100644
index 0000000..7bc65f1
--- /dev/null
+++ b/res/PREFS
@@ -0,0 +1 @@
+110
|||
||+---CHEAT (0/1)
|+---SOUND (0/1)
+---PREFS VERSION (DO NOT CHANGE)
\ No newline at end of file
diff --git a/res/levels/A b/res/levels/A
index 4e0aea1..34ede3a 100644
--- a/res/levels/A
+++ b/res/levels/A
@@ -8,14 +8,14 @@ IIAA,CDEL,DASE|CASE,DIAL,IDEA
 MEUN,THDS,NAOE|MADE,NEON,THUS
 GTAD,IAEH,MLTM|GLAD,ITEM,MATH
 CAOF,LELN,DINY|CALF,DENY,LION
-VURS,DAYZ,FEZB|DAYS,FUZZ,VERB
 BIOM,CRTK,FACY|BACK,CITY,FROM
 MEMU,UGNB,TOLY|MENU,TOMB,UGLY
 ROSW,DIEM,CHAH|CHEW,DISH,ROAM
 ECVS,GNIE,AADD|ACID,ENDS,GAVE
 UAIY,CNTO,TLAL|CLAY,TAIL,UNTO
 ERKE,HIIT,DDAG|DRAG,EDIT,HIKE
-UIIK,KSEP,WHCR|KICK,USER,WHIP,WICK|LETTERS CAN BE REUSED
+VURS,DAYZ,FEZB|DAYS,FUZZ,VERB,FURS|LETTERS CAN BE REUSED
+UIIK,KSEP,WHCR|KICK,USER,WHIP,WICK
 IECF,RHET,WTAH|ITCH,REEF,WHAT,WHET
 AADM,CWMS,SDIE|ADDS,CAME,SWIM,SAME
 MOUG,SRAH,BUCL|BRAG,MUCH,SOUL,SUCH
diff --git a/res/levels/E b/res/levels/E
index 3310413..19f23a0 100644
--- a/res/levels/E
+++ b/res/levels/E
@@ -48,7 +48,7 @@ HOSY,YEKS,RAAP,  R |HARP,REAP,ROSY,YAKS,HEAP,HERS
 AISA,GVOW,RALB,SWAE|AVOW,GALA,RISE,SWAB,GALE,SALE,RILE
 PLPE,WWOS,SIET,E   |EWES,PLOT,SLOT,WIPE,PIES,PIPE
 JOPN,NTEY,BRAE,SAIP|BRAY,JOIN,NAPE,STEP,SOAP,STAY,NOPE,JAPE,BRAN
-TAYS,OUS ,DOI ,F R |DAIS,FUSS,OARS,TOYS,DAYS,OURS,TARS
+TAYS,OUS ,DOI ,F R |DAIS,FUSS,OARS,TOYS,DAYS,OURS,TARS,FURS
 GNAE,MIIB,OKCS,SREM|GRAB,MICE,ONES,SKIM,GRAM,ONCE,ORCS,ORES,GRIM,SKIS
 GOTE,OLAM, AWN, VUL|GATE,GLUM,GOWN,OVAL,GLUE,GOAL
 RAAM,JPCD,SYWE,DOEL|DYED,JOWL,RACE,SPAM,ROAD,ROAM,DYAD
diff --git a/res/levels/I b/res/levels/I
index 5d1cc86..5765332 100644
--- a/res/levels/I
+++ b/res/levels/I
@@ -71,7 +71,7 @@ ZTME,IONY,C EM,  AX,  Z |COAX,COME,COZY,ITEM,ZONE,CONE
 CAIK,ELEE,TWAY, UNS,   L|CLAY,EWES,TAIL,TANK,TUNE,CANE,CUES
 NGOS,FITE,MRAY,C S ,E   |CITE,EGOS,FRAY,MISS,NITS,CITY,FITS
 WOEY,KHSW,TNDT,B UD,H   |BODY,HOST,KNEW,THUD,WHEY,THEY
-BPAA,AUSP,H RT,S  S,F   |AURA,BURP,FUSS,HURT,SPAT,SPAS
+BPAA,AUSP,H RT,S  S,F   |AURA,BURP,FUSS,HURT,SPAT,SPAS,FURS
 BISR,EAWA,TREY,A  W,D  L|AREA,BAWL,DREW,EASY,TIER,BREW
 VLAD,SIFS,ATUO,R TL,   E|ALTO,RIFE,SITS,STUD,VIAL,SITE
 AOFS,LACW,GRWT, IE , N  |ANEW,ARCS,GIFT,LAWS,LOFT,GOES,GREW,LIES,LIFT,LOWS
diff --git a/src/glue.sound.a b/src/glue.sound.a
index e0e992e..95055c6 100644
--- a/src/glue.sound.a
+++ b/src/glue.sound.a
@@ -6,6 +6,7 @@
 ; - ReinitSoundAfterPrefChange
 ; - LoopSound
 ; - PlaySound
+; - PlaySoundToCompletion
 ; - ErrorSound
 ;
 
@@ -89,6 +90,29 @@ SoundLibraryDispatch=*+1
 +        lda   KBD
 Silence  rts
 
+PlaySoundToCompletion
+         pha
+         lda   ED0974+1
+         sta   @restoreED
+         lda   MBKEYBRANCH+1
+         sta   @restoreMB
+         lda   #0
+         sta   ED0974+1
+         sta   MBKEYBRANCH+1
+         pla
+         jsr   PlaySound
+         php
+         pha
+@restoreED=*+1
+         lda   #$FD                  ; SMC
+         sta   ED0974+1
+@restoreMB=*+1
+         lda   #$FD                  ; SMC
+         sta   MBKEYBRANCH+1
+         pla
+         plp
+         rts
+
 InitPuzzleSound
          lda   #$FF
          sta   progressionIndex
@@ -122,7 +146,7 @@ PlayNextChord
          lda   ($FE), y
          tay
          pla
-         jsr   PlaySound
+         jsr   PlaySoundToCompletion
          pla
          tax
          rts
@@ -132,7 +156,7 @@ PlayFinalChord
          txa
          pha
          +LD16 kFinalChord
-         jsr   PlaySound
+         jsr   PlaySoundToCompletion
          pla
          tax
          rts
diff --git a/src/mockingduet.a b/src/mockingduet.a
index 3d3b399..06eeaef 100644
--- a/src/mockingduet.a
+++ b/src/mockingduet.a
@@ -93,6 +93,7 @@ W2        DEC TEMP
           DEX
           BNE W1
           BIT $C000
+MBKEYBRANCH
           BMI END
           JMP NEXT
 
diff --git a/src/ui.main.menu.a b/src/ui.main.menu.a
index eb42d22..a32a8a7 100644
--- a/src/ui.main.menu.a
+++ b/src/ui.main.menu.a
@@ -344,18 +344,18 @@ disclaimer
          !raw  "* NOT GUARANTEED, ACTUAL COUNT MAY VARY."
 
 worlddescriptions
-         !raw " 4X3, EASY       0% "
-         !raw " 5X3, BASIC      0% "
-         !raw " 6X3, SIMPLE     0% "
-         !raw " 7X3, RELAXED    0% "
-         !raw " 4X4, FAIR       0% "
-         !raw " 5X4, QUICK      0% "
-         !raw " 6X4, MEDIUM     0% "
-         !raw " 7X4, AVERAGE    0% "
-         !raw " 4X5, HARD       0% "
-         !raw " 5X5, TOUGH      0% "
-         !raw " 6X5, TRICKY     0% "
-         !raw " 7X5, COMPLEX    0% "
+         !raw " 4X3  EASY       0% "
+         !raw " 5X3  BASIC      0% "
+         !raw " 6X3  SIMPLE     0% "
+         !raw " 7X3  RELAXED    0% "
+         !raw " 4X4  FAIR       0% "
+         !raw " 5X4  QUICK      0% "
+         !raw " 6X4  MEDIUM     0% "
+         !raw " 7X4  AVERAGE    0% "
+         !raw " 4X5  HARD       0% "
+         !raw " 5X5  TOUGH      0% "
+         !raw " 6X5  TRICKY     0% "
+         !raw " 7X5  COMPLEX    0% "
 
 kWorldShortNames
          !byte 3