Convert Autodesk FLI to aiff

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 aiff in the search box.
Press Convert.

What is the difference between Autodesk FLI and .aiff?

Name: Autodesk FLI; Audio Interchange File Format
Extension: .fli; .aiff
Format: Binary; Binary
Category: Raster Image; Audio
Developer: Autodesk; Apple
Description: High-quality audio file created using the (AIFF) file format; contains CD-quality audio stored in a non-compressed, lossless format, similar .WAV files; commonly used to burn audio CDs.
MIME Type: audio/aiff
Sample: sample.aiff
Wikipedia: .aiff on Wikipedia