how can i turn off sound/music in flash games ?

[assddd]

when im bored and i want to pass time i play flash games while listening to music. but i also need to listen to the game sounds and i hate it.
how can i mute it when i dont have that option in the game or i cant right click and do the option mute ?

[Sparsh007]

it usually has a speaker kind of button
Something like this


or if u cant just switch off/mute the speaker