Actionscript 3.0 sound or audio loop

simply,

how does one loop a sound using actionscript 3.0 in the first frame
once export for actionscript linkage has been checked?

what would the class be?

i have the base class stated as: flash.media.Sound

i would like the audio to play looped via actionscript from the first frame.

also, if you have a reference for these basic commands
i would be very appreciative.

thank you,

jh.