Where can I find an audio editor with audio effects?

Use use an echo or reverb chamber for live recording through a desk.

A recorded vocal can be processed using a digital recording program like Audacity which is free. In it you will find a re-verb plug in which will allow you to add this effect.

Audacity Free Audio Editor and Recorder

Have you tried opening it up in another versions of Excel? Try 2003, 2010 or whatever. It can be effective.

Have you tried Open Office, Libre Office, Star Office and another? It can be useful too.

It`s possible the corruption is too bad. Have you used google to find any software? You can find both free or not, first are not so effective in my opinion. Try professional program, for example Recovery Toolbox for Excel.
https://excel.recoverytoolbox.com/
You can use the trial version and decide how useful is it in this case.

V-6310 with manual for sale - might be compatible instructions.

https://www.ebay.com/itm/Videonics-Thumbs-Up-TU-1-Home-Movie-Video-Editor-Manual-Box-Ambico-Mixer-6310-/232674214289

here, i found an open source site for you:
free audio editor http://audioeditorfree.com/

Hi, you can edit your Digital images with many Image Editors available today.

My personal suggestion is to use the freely available alternative to the Photoshop Software called GIMP which is short for Graphical Image Manipulation Program.

Download from the link below:

http://www.gimp.org/

You can also check the top 5 Image editors from the below link:

http://www.basic-digital-photography.com/top-5-free-photo-editors-for-windows.html

Download a software to your computer called Audacity. It will let you cut songs and then you can save them to your phone and use them as ringtones.