Convert Autodesk FLI to w64

Download and install the latest version of Filestar.
Right click on one or more Fli file(s) on your desktop and select Convert with Filestar.
Type convert to w64 in the search box.
Press Convert.

What is the difference between Autodesk FLI and .w64?

Name: Autodesk FLI; Sony Wave64 Audio File
Extension: .fli; .w64
Format: Binary; Binary
Category: Raster Image; Audio
Developer: Autodesk; 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
Sample: sample.w64
Wikipedia: .w64 on Wikipedia