solved Bad audio quality

[Newb]

I am using Videopad v8.91 to put together some short movies from car shows. I have filmed with my iPhone and a GoPro. I always unlink the audio from the video and use music instead (MP3). This is for personal use only but sometimes I post a few seconds on my private Instagram. The sound is perfect when I watch the clip in the timeline but when I export the file (as a mp4) the audio becomes horrible. Sounds like a screaming alien taking a shower. Like running water and plastic bags being folded. How can I get away from this bug? 

[borate]

Let's take a gander at the project.  Then others can test it.  The process is quick, easy and can be private.  Just follow these 4 steps...

1.  With your project on the timeline, click on MENU at the top-left.  Click FILE|BACK UP PROJECT FILES TO FOLDER.  Choose a folder and SELECT FOLDER.
2.  Locate the saved, numbered folder, NOT the exported or VPJ file.  Upload it to a free server - Google Drive, MS OneDrive, etc.*
3.  Get a shared, public link.  If using Google Drive click GET SHAREABLE LINK. Change "restricted" to "anyone with the link can view"  Then click COPY LINK | DONE.
4.  Paste that link here, or click the folder at the top-right of this forum and privately message it to me.  It won't be shared.
*    Before uploading, right-click the folder, click PROPERTIES.  Look at the File Size to confirm that it's not too big for the free space on the server.

[Newb]

Thanks for the fast reply. I’m gonna PM you tomorrow when I get home from work. Once again, thank you. 

[borate]

Resolved via a Personal Message.  Not a VP fault.