Script on Intro Help

This is the script I used for my intro (rayworks presents...)

#-------------------Logo Script by Adrianmati---------
#---------Music feature added by Hypershadow180-----
#------------------------------------------------------------
#---------Fade Ver. 2 pictures edit by Takrena-----
a=0


logo = Sprite.new
logo.bitmap = Bitmap.new("Graphics/Pictures/rayworks logo")
logo.ox = logo.bitmap.width / 2
logo.oy= logo.bitmap.height / 2
logo.x = 320
logo.y = 240
logo.opacity = 0
for i in 0..5
logo.opacity += 50
Graphics.update
sleep(0.1)
end
loop do
Graphics.update
a += 1
if a == 200 #First picture timer starting in 0

break
end
end
for u in 0..5
logo.opacity -= 50
Graphics.update
sleep(0.2)
end
k = Sprite.new
k.bitmap = Bitmap.new("Graphics/Pictures/presents")
k.ox = k.bitmap.width / 2
k.oy= k.bitmap.height / 2
k.x = 320
k.y = 240
k.visible = true
k.opacity = 1
for i in 0..5
k.opacity += 50
Graphics.update
sleep(0.2)
end
loop do
Graphics.update
a += 0
if a == 200 #second picture timer starting in 200
break
end
end
for u in 0..5
k.opacity -= 50
Graphics.update
sleep(0.3)
end


logo.visible = false
k.visible = true


k.visible = false

Can you tell me how I can get the second picture to stay longer and how to add music for the intro.
Also can you give me a script for overdrives or limits.
Thxs.