Play a sound during multiple slides in keynote with AppleScript

songs.scpt

set dontplay to 0
tell application "Keynote"
	start from slide 1 of front slideshow
end tell

set volume output volume 80

repeat
	tell application "Keynote"
		tell front slideshow

			-- Start a song 
			if get slide number of current slide is 2 and dontplay is 0 then
				set dontplay to 1
				tell application "Play Sound"
					-- This sound part maybe is interesting just when you are playing a sound before 
					repeat until output volume of (get volume settings) ≤ 0
						delay 0.2
						set volume output volume ((output volume of (get volume settings)) - 5)
						get output volume of (get volume settings)
					end repeat
					
					set volume output volume 80

					play alias "Macintosh HD:Users:path_to.mp3"
				end tell
			end if
			
			-- Reset dontplay on the next slide 
			if get slide number of current slide is 3 then
				set dontplay to 0
			end if

			-- Repeat the schema for each slide you want to start a new song :)

		end tell
	end tell
end repeat