What platform are you on? What module are you using for playback right now?

I don't know about python but the trick of doing this is increasing the tempo of music. If the current module you are using can do that then that will be simple case

Similiar to what evstevemd said, I was thinking you would need to change the sample rate (how many bits per second are played) if you take a 44000hz sample and play it at 88000hz, it should play at double speed.

Well im on windows if that helps. How would i change the sample rate? Is there an easy way to do that in python?

Okay well got an update for everyone. I am using pyAudio and wave modules to play my .wav file. Now i can set the "Rate" in which the file plays. This i can change at the start of the program and it will change the rate at which the sound is played. This changes the speed and therefore the pitch. My issue is, with using pyAudio i haven't been able to work out how to change the rate while the application is running.

So if anyone knows how to do that. That will be very helpful.

site for pyaudio that i can download and fiddle around? Is it built in? wx.Python??

http://people.csail.mit.edu/hubert/pyaudio/

I think a better option might be to switch to pySonic

http://pysonic.sourceforge.net

the Song.userspeed() property in particular looks like what you would want

Is there anywhere to download pysonic for python 2.5? Because i cant find it on the sourceforge page..