Complex sentence: Brolsma's video entitled "Numa Numa Song", was released in December 2004 on the website Newgrounds.com, it was the first Numa Numa--themed video to gain widespread attention.
Split into simpler sentences: Brolsma's video, entitled "Numa Numa Song", was released in December 2004 on the website Newgrounds.com. It was the first Numa Numa--themed video to gain widespread attention.