Help me on sounds

i know how to manipulate sounds in actionscript, but i want it to be more complex.

i created a button and when you press the RIGHT dir key, the sound and animation will play, but the moment you press again the RIGHT dir key, the sound will play again, so there are now 2 sounds playing. what should i do. also, i want to pause the sound, and when you play it, the sound will start playing on the point where you pause it. thanks guys:))