Music is not my favorite part of film making so I know how you feel. You seem to have found the same royalty free site that I use when I need music. I made a movie last year and when it came to music I cursed my parents for never forcing piano lessons on me as a child. I took some stuff from that site but I also put an ad out for musicians and I got some good response. You could always try that next time you need music. There are plenty of musicians out there who would love to get their music in a movie.
This is the movie I made, Memento Mortis
https://vimeo.com/144571210 - Trailer
https://gumroad.com/l/mementomortis - full movie
I've also made a few shorts and a web series that can be seen on my vimeo page. You'll probably recognize some of the music.