Davdecoder CLI
Simple command line tool that allows you to batch convert dav to wav and wav to dav format. 

How to use:
1. Assign in windows dav file extension to open them using davDecoder-cli.exe;
2. Open dav file with davDecoder-cli.exe;
Alternativly you can just drag&drop multiple dav files onto davDecoder-cli.exe to convert multiple files at same time;
Another alternative way is to open command line and write command "davDecoder-cli.exe [full paths to dav files separated by space]"