Problem with sounds

[Ryouta]

So I have added music already in M.U.G.E.N., but I don't know how to change the cursor sounds(The sounds the game plays when you move in the title screen, or choose a character etc.) in the game. I tried to Google but it only shows tutorials to MUSIC!. I'm hopeless, please help!

[vgma2]

First off, you'll need Fighter Factory to edit .snd files.
Use it to open up the system.snd that you Mugen uses.
You'll be able to replace the sound effects with your sound clips.  They must be in wav format.

For further editing, you can check out lines in your system.def

;-------------------------------------------------------------------
;Title screen definition
[Title Info]
fadein.time = 10
fadeout.time = 10
menu.pos = 159,158
menu.item.font = 3,0,0
menu.item.active.font = 3,5,0
menu.item.spacing = 0, 13
; Names for each of the items in the menu. Names must be in quotes.
; Use "" to disable an item. If all are disabled, goes straight to demo mode
; (hold Esc to quit demos).
menu.itemname.arcade = "ARCADE"
menu.itemname.versus = "VS MODE"
menu.itemname.teamarcade = "TEAM ARCADE"
menu.itemname.teamversus = "TEAM VS"
menu.itemname.teamcoop = "TEAM CO-OP"
menu.itemname.survival = "SURVIVAL"
menu.itemname.survivalcoop = "SURVIVAL CO-OP"
menu.itemname.training = "TRAINING"
menu.itemname.watch = "WATCH"
menu.itemname.options = "OPTIONS"
menu.itemname.exit = "EXIT"
; These parameters define the window in which the items are visible
; in.
menu.window.margins.y = 12, 8
menu.window.visibleitems = 5
menu.boxcursor.visible = 1     ;Set to 0 to disable default cursor display
menu.boxcursor.coords = -58,-10,57,2
; These are the sounds for cursor movement
cursor.move.snd = 100,0
cursor.done.snd = 100,1
cancel.snd = 100,2

These values tell Mugen which sound file to play.
They're littered all over the system.def.  Explore a bit eh?