Problem with SWF export and audio looping

Question

When I export from Keynote into SWF, I get an odd audio looping problem when playing the SWF files. Here's the workflow:
Create Keynote presentation (includes transitions typically, but also happens with presentations that don't).
Record audio using Audacity, convert using iTunes to MP3 in order to be able to export from Keynote to Flash (Keynote can't export WAV files).
Drop in MP3s onto slides. Sync up my transitions with audio.
Export Keynote file to SWF, including the audio.
Play SWF file either directly using Safari or when posted using Firefox. Audio plays, but a certain length into the audio the audio file seems to re-initiate and play over itself.
Anybody seen this? Anyone know how to solve it?
This is pretty critical for us (work related). We are using Keynote to create educational content SWF files, and we only discovered this problem after release.
Thanks for your help!
Michael

Answer 1

The helper class using IText:
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfWriter;
public class PDFHealer
   public static InputStream heal(InputStream in) throws DocumentException, IOException
      try
         ByteArrayOutputStream out = new ByteArrayOutputStream();
         PdfReader reader = new PdfReader(in);
         // we retrieve the total number of pages
         int n = reader.getNumberOfPages();
         // step 1: creation of a document-object
         Document document = new Document();
         // step 2: we create a writer that listens to the document
         PdfWriter writer = PdfWriter.getInstance(document, out);
         // step 3: we open the document
         document.open();
         // step 4: we add content
         PdfContentByte cb = writer.getDirectContent();
         int i = 0;
         while( i < n )
            document.newPage();
            i++;
            PdfImportedPage page1 = writer.getImportedPage(reader, i);
            cb.addTemplate(page1, 0, 0);
         // step 5: we close the document
         document.close();
         ByteArrayInputStream ret = new ByteArrayInputStream(out.toByteArray());
         out.close();
         return ret;
      finally
         in.close();