How to use find when there are spaces in the directory names?

I need to find all .nfo files in my media directory so I can use sed to change some parts. The problem is my folders have spaces in the names.

find  /media/media1/HDTV -name  \*.nfo -type f 
media/media1/HDTV/Band of Brothers/Season 1/
…

The output file won't found by a sed command to change the strings I want.

find doesn't care about special characters in file names, but the program that's parsing the output of find might. If you're using xargs, use the -print0 option to find, and the -0 option to xargs. This tells find and xargs to use null characters (which cannot appear in file names) as a separator between file names, and xargs not to do any other parsing which would mangle file names containing spaces.

find /media/media1/HDTV -name '*.nfo' -type f -print0 |
xargs -0 sed -i 's/pattern/replacement/'

Another way to invoke a command on many files is to use find only.

find /media/media1/HDTV -name '*.nfo' -type f -exec sed -i 's/pattern/replacement/' {} +