I've recently posted a video example of audio alignment using Sonic Visualiser and the MATCH Vamp plugin (which SV will use to do automatic alignment, if it is installed):
http://vimeo.com/3310893At the moment it lacks any sort of voiceover or explanatory subtitles -- I may well go back and add some, but this was my first attempt at videoing anything on that particular platform so it's pretty simplistic.
There is also a written tutorial on this subject, linked from the documentation page:
http://sonicvisualiser.org/documentation.htmlChris
