trx.sound.is_available(id)true if the specified sound sample is available.trx.sound.stop(id)trx.sound.play(id[, opts])opts.pos may be a { x=, y=, z= } table for position.trx.sound.play(99)trx.sound.play(99, { pos = { x = 100, y = 200, z = 50 } })trx.sound.stop_all()