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Most any quality audio editor (WaveLab, Sound Forge) will take a input signal and re-sample it (thereby changing hte pitch) without changing the speed (slowwing down or speeding up). But it's very difficult to do well. It's one of those things that you don't just pick a operation and go -- you have to prep the file and doa lot of work first.
My advice (haivng done this a ton of times) -- find the track you want in another key. Most companies offer acc. tracks in various keys or on CD with numerous keys. It will keep you from one heck of a migraine.
-Craig
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