File Extension THX File Format Amiga THX Tracker music THX stands for Amiga THX Tracker music. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question SAP ABAP - ATP for Consignment Items How to make VB6 and SQL Server 2000 multiuser and client-server? I'm using wireless netgear router and i can't share printer.