The present disclosure provides a speech editor for creating a session file having text segments synchronized with an audio file. The editor receives a text segment and a first file that has tag information lines associated with the text segment. Each tag information line has a portion of original text transcribed from the audio file and a corresponding audio length value. The editor stores the audio length of a current line in a new tag information line for the second file, determines whether the original text portion of the current line is found in the text segment, and if the original text portion of the current line is not found in the text segment, identifies a corrected text of the text segment adjusting the audio length of the new tag information line of the session file to correspond to the corrected text.