movies/tvshows

intitle:"index.of" (mp4|avi|mkv) "movie or tvshow title" -html -htm -php -asp -jsp

music

intitle:"index.of" (mp3|flac|aac) "band or song" -html -htm -php -asp -jsp

books

intitle:"index.of" (pdf|epub|mob) "book i'd like to read" -html -htm -php -asp -jsp

(edited for clarity)

You could more searches for all three options above, with slightly different search criteria:

"parent directory" -html -htm -php -asp -jsp (mp4|avi|mkv) "movie or tvshow title"

etc...