An aai file extension is related to the Dune HD Player, a solution for Full HD video playback.
AAI file extension - Dune HD Player AAI graphics image
What is aai file? How to open aai files?
File type specification:
The aai file extension is associated with the Dune HD Player, a universal solution for Full HD video and audio playback as well as IPTV and VOD streams.
The aai file stores bitmap picture used in Dune devices to represent images with transparency (alpha channel) support.