These components that are enclosed in the nitoTV bundle are included with the application in order for the application to be easier to use for the user.  They are licensed under the GPL and LGPL. The source code and licenses for all of these can be found on the websites listed

Atomic Parsley
http://atomicparsley.sourceforge.net/

mplayer
http://www.mplayerhq.hu/

ffmpeg
http://ffmpeg.sourceforge.net/

dvdbackup
http://dvd-create.sourceforge.net/download.shtml

gzip
http://www.gzip.org/
http://www.opensource.apple.com/

bzip2
http://www.bzip.org/
http://www.opensource.apple.com/

unzip
http://www.info-zip.org/UnZip.html

bsdiff and bspatch
http://www.daemonology.net/bsdiff/

webkit
http://webkit.org/

openal
http://openal.org/

mediainfo
http://mediainfo.sourceforge.net/