After recording a song and exporting it to a wave file, I'd like to try hearing it at different tempos as I think the original is not best for the song. I'm able to start a new project, set its tempo to the same as the original recording, import my song. So far so good. How do I change the tempo??? I have followed the tutorial below but the audio doesn't change as I change the project tempo. Any help is much appreciated.
 
http://www.youtube.com/watch?v=weIZy_ibH5c
 

You ought not to use Audio Snap for this.
In Track View: Make your entire stereo wav fit to screen
                      Hold down the Ctrl key and hover your mouse to the end of the wav drawing
                      Click the left mouse button;You will see a yellow vertical bar
                      By keeping the Ctrl key depressed and left mouse button
                      You can drag the wav picture left-n-right
                      Left will shorten and speed things up-and right the opposite
 
Do a Bounce to Clip when done. 
 
 

If you have the free Audacity program it's a snap.
Import your wav master and change the tempo (but not the pitch)
Very simple and sounds fine to my ears if you don't go crazy with the percentage.

Simpleman: That seems to work. Thank you
M_Glenn_M: I'd like to try that, Thanks for the tip.
 

Here's the next challenge. How do I change the tempo in a project for all audio and midi tracks before I export a final mix? I know that when I change the tempo in the transport bar that the midi tracks automatically adjust accordingly but how do I get the audio clips in the tracks to respond as well. I say clips because each audio track does not have a complete wav form from the start to the end of the project. I'll try posting a screen shot of the track view of my project if that helps describe this. Would be great if I could make this work as I'd like to avoid having to re-track the audio as I got some 'accidental-magic' I dont know I can reproduce.
Thanks guys

Here's the session...
 

If you bounce the track it will become one wave with silences.
 

M_Glenn_M: Ok, good idea. Then what's the next step to change tempo for both midi and the bounced audio?

The two ideas should both work. Either Control/drag the clips in sonar (Orange bar at the end will show) or export the whole mix (or indiv. trax) and do it in Audacity.
If in sonar, I think you have to ensure the trax are all the same length by slip editing them 

Thanks M_Glenn_M