I second the baking soda and vinegar.
You can soak them in a mixture of baking soda and vinegar in the water. You can also add 1/4 cup up to 1 cup of baking soda to the wash cycle with your detergent and use the vinegar in the rinse cycle or in place of fabric softener. If you use a lot of baking soda, you may want to do a second rinse. Oh, you also want to use the hottest water temperature that is safe for the fabrics.
Line dry outdoors if you can.
I just used this method on some musty clothes and it worked fine.
Good luck :)