Trying to solve NOTPRON - The Hardest Riddle Available on the Internet (Level 5)
First things first, it seems that the recommended browser for solving NOTPRON (http://www.notpron.org/notpron/) is Mozilla Firefox.
My default browser for almost a year now is Brave (at first mostly because of the "rewards" but I noticed that there is indeed a noticeable difference in loading pages compared to Chrome or Firefox so I stayed with Brave). If one is using other browsers other than Mozilla for Level 5 (and onwards I presume) you will get the similar banner below.
Anyways, here is Level 5:
On Mozilla, it seems there is a song that will play in the background.
As to how to solve this level, it's just a simple Google Search. XD
Googling "eyes like an angel smiles like a devil" gives us this result:
Which also is the title of one of the book on the given image "Big Bad Voodoo Daddy".
In order to get to the next level, just press the "Start/Stop" on the remote on the image. It will then ask you for a Username and a Password with "simple" as the Username and "songs" as the password, the title of the song playing in the background on this level is titled "Simple Songs".