Hi all,...can someone please help me with this soundtrack pro 2? I;m a newbe at a mac, i came from windows using protools now im on this mac (which i love) but i'm lost

How do i change the BPM for the whole project? i see it in the window on the bottom right, but when i change it,.it dont do anything, it still sounds the same. Can you please help? Thanks for your time.
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