I should have asked what version you are using
You must be using an older version of AudioLabel, as 'Save as Image' is available in Version 5.0.
For older versions of AudioLabel, under the 'File' Menu, select the "Export Label to Image File" option. Audiolabel can create Bitmap Files (bmp), JPEG Files (jpg), PNG Files (png), and TIFF Files (tif). Once you create the PNG file, you can create your PDF using the previous instructions.