With the audio converters that exist and have you not yet found one that converts you directly from WMA to WAV? Well, don't despair, because there is, and it's called HiFi WMA WAV Converter.
With HiFi WMA WAV Converter you can not only convert from WMA to WAV, but also from WAV to WMA. It is very interesting that it allows you to specify the bitrate and frequency of the resulting audio file in the configuration options.
In addition, HiFi WMA WAV Converter comes equipped with its own ID3 tag editor to fill in the audio information. Conversions can be processed in batches. It even brings a small player to listen to the files you convert.
You can free download HiFi WMA WAV Converter 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.