Pro Tools supports mixed audio file formats (such as WAV and AIF) in a single session. When importing audio files into a Pro Tools session, you can choose to Add them rather than Convert them regardless of the audio file format.You can change the audio file format for all newly recorded or imported (and converted) files in a session by selecting a different Audio Format option in the Session Setup window.To change the Audio Format for the Pro Tools session:2 In the Session Setup window, select an audio file format (AIF or WAV) from the Audio Format selector.