How can you change the sample rate of a session in Pro Tools?

The sample rate of a session in Pro Tools is changed through the Session Setup window because this window is specifically designed for session parameters, including the sample rate. When you access this window, you can see options that allow you to define the session's properties, including its timebase, frame rate, and most importantly, the sample rate. This is a critical setting as it determines how audio data is recorded and played back, affecting the quality and fidelity of the sound.

Using the Session Setup window is also intuitive since it consolidates session settings in one place, making it easy for users to adjust various session specifications without the need to navigate through different menus or dialogs. Other options, such as the track settings menu or audio preferences dialogue, do not provide direct controls for changing the sample rate, as they focus on individual tracks or broader application settings respectively. Editing the session file directly is not a recommended or commonly used approach, as it can lead to corruption or errors within the session. Therefore, the Session Setup window is the correct method to modify a session's sample rate effectively.