File Extension LNT File Format LiveNote Transcript file LNT stands for LiveNote Transcript file. 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 HIT Exchange Live Chat transcript: On ACOs and health IT Transcripts Transcription cannot be started.