Corrected frequency values based on the real CPU Clock frequency

The Mockingboard PSGs base their frequency on the Apple II Clock.
https://groups.google.com/g/comp.sys.apple2/c/lNSdI9GyBgc/m/8tAydOPUAwAJ
Based on this discussion I made a spreadsheet to calculate the correct values of the frequency tables and updated the ones used by the Music Construction Set player.

src/MCS-ECHO+.S

@@ -49,14 +49,14 @@ PLUG      HEX 00
 FREQLO    HEX 00
 FREQHI    HEX 00
 TIED      HEX 0000
-FREQLOS   HEX 1E1F20222426292C
-          HEX 2E3033363A3D4145
-          HEX 494D52565C61676D
-          HEX 737A8189919AA3AD
-          HEX B7C2CEDAE7F40312
-          HEX 2334465A6E849BB3
-          HEX CDE9062545688CB3
-          HEX DC0836679BD20101
+FREQLOS   HEX 1D1E20222426292B
+          HEX 2E3033363A3D4144
+          HEX 484D51565B61676D
+          HEX 737A8189919AA3AC
+          HEX B7C1CDD9E6F40212
+          HEX 223345596D839AB2
+          HEX CCE8052344668BB2
+          HEX DB06346598CF0101
 FREQHIS   HEX 0000000000000000
           HEX 0000000000000000
           HEX 0000000000000000

src/MCS-MB.S

@@ -47,14 +47,14 @@ PLUG      HEX 00
 FREQLO    HEX 00
 FREQHI    HEX 00
 TIED      HEX 0000
-FREQLOS   HEX 1E1F20222426292C
-          HEX 2E3033363A3D4145
-          HEX 494D52565C61676D
-          HEX 737A8189919AA3AD
-          HEX B7C2CEDAE7F40312
-          HEX 2334465A6E849BB3
-          HEX CDE9062545688CB3
-          HEX DC0836679BD20101
+FREQLOS   HEX 1D1E20222426292B
+          HEX 2E3033363A3D4144
+          HEX 484D51565B61676D
+          HEX 737A8189919AA3AC
+          HEX B7C1CDD9E6F40212
+          HEX 223345596D839AB2
+          HEX CCE8052344668BB2
+          HEX DB06346598CF0101
 FREQHIS   HEX 0000000000000000
           HEX 0000000000000000
           HEX 0000000000000000

src/MCS-MBSX.S

@@ -49,14 +49,14 @@ PLUG      HEX 00
 FREQLO    HEX 00
 FREQHI    HEX 00
 TIED      HEX 0000
-FREQLOS   HEX 1E1F20222426292C
-          HEX 2E3033363A3D4145
-          HEX 494D52565C61676D
-          HEX 737A8189919AA3AD
-          HEX B7C2CEDAE7F40312
-          HEX 2334465A6E849BB3
-          HEX CDE9062545688CB3
-          HEX DC0836679BD20101
+FREQLOS   HEX 1D1E20222426292B
+          HEX 2E3033363A3D4144
+          HEX 484D51565B61676D
+          HEX 737A8189919AA3AC
+          HEX B7C1CDD9E6F40212
+          HEX 223345596D839AB2
+          HEX CCE8052344668BB2
+          HEX DB06346598CF0101
 FREQHIS   HEX 0000000000000000
           HEX 0000000000000000
           HEX 0000000000000000

src/mcs-echo+.a

@@ -50,14 +50,14 @@ plug      !byte 00
 freqlo    !byte 00
 freqhi    !byte 00
 tied      !byte $00,$00
-freqlos   !byte $1e,$1f,$20,$22,$24,$26,$29,$2c
-          !byte $2e,$30,$33,$36,$3a,$3d,$41,$45
-          !byte $49,$4d,$52,$56,$5c,$61,$67,$6d
-          !byte $73,$7a,$81,$89,$91,$9a,$a3,$ad
-          !byte $b7,$c2,$ce,$da,$e7,$f4,$03,$12
-          !byte $23,$34,$46,$5a,$6e,$84,$9b,$b3
-          !byte $cd,$e9,$06,$25,$45,$68,$8c,$b3
-          !byte $dc,$08,$36,$67,$9b,$d2,$01,$01
+freqlos   !byte $1D,$1E,$20,$22,$24,$26,$29,$2B
+          !byte $2E,$30,$33,$36,$3A,$3D,$41,$44
+          !byte $48,$4D,$51,$56,$5B,$61,$67,$6D
+          !byte $73,$7A,$81,$89,$91,$9A,$A3,$AC
+          !byte $B7,$C1,$CD,$D9,$E6,$F4,$02,$12
+          !byte $22,$33,$45,$59,$6D,$83,$9A,$B2
+          !byte $CC,$E8,$05,$23,$44,$66,$8B,$B2
+          !byte $DB,$06,$34,$65,$98,$CF,$01,$01
 freqhis   !byte $00,$00,$00,$00,$00,$00,$00,$00
           !byte $00,$00,$00,$00,$00,$00,$00,$00
           !byte $00,$00,$00,$00,$00,$00,$00,$00