Snap

I was looking at the lyrics of Lady Gaga's song--paparazzi

but just can't figure out what 'snap' means in the line



"(Real good) We're dancing in the studio
(Snap, snap) That song on the radio
(Don't stop) For anyone
We're plastic but We'll still have fun"



Some websites say that it means 'stop'

but I can't find this definition in the dictionary.

I wonder if it means 'snap fingers'

or 'the sound of photographing' (since this song is about paparazzi)



Thanks for helping...^^