Convert w64 to dnxhr

Download and install the latest version of Filestar.
Right click on one or more W64 file(s) on your desktop and select Convert with Filestar.
Type convert to dnxhr in the search box.
Press Convert.

What is the difference between .w64 and .dnxhr?

Name: Sony Wave64 Audio File; Avid DNxHR
Extension: .w64; .dnxhr
Format: Binary; Binary
Category: Audio; Video
Developer: Sony
Description: Audio container file created in Sony's Wave64 format, which is supported by various Sony audio editing programs; useful for audio editing because it supports arbitrary sampling frequencies, channels, and bit depths.
MIME Type: audio/x-wav; video/quicktime
Sample: sample.w64
Wikipedia: .w64 on Wikipedia; .dnxhr on Wikipedia