Based on the search results, there are several websites where you can download the mp3 file for the song "What a Beautiful Name" by Hillsong Worship. Here are some of the websites that offer the song for free download:

• Jesusful
• CeeNaija
• Wakristo

Additionally, the song is available for download on Boomplay and Allbaze, but it is unclear if they offer the song for free or if there is a fee to download it. It is important to note that downloading copyrighted material without permission is illegal and can result in fines or other legal consequences.