What version of Videopad? Please be a little more specific about "scrambled."
Before loading your project, click the OPTIONS menu, then the DISK tab and Clear Unused Cache Files.
If an audio component has been corrupted set things right by first closing VP, then deleting all files in these PC folders.
"C:\Users\<your PC name>\AppData\Roaming\NCH Software\Components"
"C:\Program Files (x86)\NCH Software\Components" or "C:\Program Files\NCH Software\Components"
Reinstall Videopad. Or install this version. 8.45
If no joy, share the project and someone will be glad to take a look. This is easy, quick and can be private. Don't upload the export, just the PORTABLE project, per these instructions...
http://nch.invisionzone.com/topic/23659-tips-for-getting-help-on-this-forum/
If it contains sensitive material link it in a personal message (PM). Click the envelope above. It won't be passed on or retained. Use FILE|SAVE PORTABLE PROJECT AS, not simply SAVE PROJECT, and don't forget to get a shareable, public link - not one that is restricted.