Peak allows you to open audio files created in a variety of common audio formats including AIFF, Sound Designer II, QuickTime, Red Book, WAVE, .au, .snd, and System 7 Sounds.
Opening WAVE files
The Macintosh recognizes files using a “type” and “creator.” WAVE files are recognized by some audio applications with a type “.WAV,” while others recognize only “WAVE” as the type.
Peak, along with Apple’s QuickTime ™  software and most other Multimedia applications, recognize WAVE files of the type “WAVE,” but not of type “.WAV.” You can use ResEdit or other third-party applications to ensure your WAVE files have the correct type prior to attempting to opening them with Peak.
Opening Compressed Audio Documents
AIFF/AIFC and QuickTime files with compression such as MACE 3:1, MACE 6:1, IMA 4:1, or mlaw are compatible with Peak. If Sound Manager version 3.2 or later is installed, Peak can open these files for editing
To open an existing audio document:
1. Choose Open ( command -O) from the File menu.
2. In the dialog that appears, locate the file that you wish to open. From this dialog, you can open AIFF, Sound Designer II, QuickTime, RedBook, WAVE, .au, .snd, and System 7 Sound formatted audio files. This dialog also allows you to audition files by selecting the file in the list and then clicking the Play icon.
3. When you find the file you wish to open, click the Open button and Peak will open the audio file into a new audio window, displaying an overview of the
entire sound.
4. When you are finished opening audio documents, click the Done button.
