Open Audacity. On the menu bar, click "File" and select "Open." Use the navigation box to select the Audacity file that you want to export.
Click "File," "Export." If using the Windows edition, you may see several "Export" options, such as "Export as WAV" and "Export as MP3." You can choose either of these formats. In the "Save As" box, enter the name of your audio project. In the following box, select the location on your hard drive where you want to save the exported file, such as on your desktop. Note that the Windows edition of Audacity has multiple "Export" options, for different file formats.
Click the "Format" box that appears below the "Save As" box. Select a QuickTime-compatible format from the list. QuickTime compatible formats include AIFF, WAV, MP3, M4A and AMR. Do not select one of the other file formats, such as FLAC or AC3; QuickTime cannot read them. Click "Save" after you make your selection.
Quit Audacity and open QuickTime. If you do not have the QuickTime player, you can download it for free from Apple.
Click "File" on the QuickTime menu bar and select "Open File" from the drop-down menu. Using the navigation menu, select your exported Audacity file and click "Open."
Click the "Play" button on your QuickTime player to hear your audio file. The "Play" button appears as a right-pointing triangle.