well when i bought sound forge 5 (it came out in early to mid 2001) i found that the crippledbutyoustillpayforit version was known as "Sound Forge XP Studio 5". This sucks. Good job the full version is just known as "Sound Forge 5" because i don't want to ever have XP on my machine...
still, that was the first time i heard of XP and i still don't know what it means. 'extra pee'?