Doombox is a WebKit.NET-based player for playing and looping YouTube videos. For convenience, it lists them in a traditional playlist, making them easy to access.
For the program's functionality, the videos are processed from YouTube URLs and loaded to the equivalent video IDs at www.infinitelooper.com.
Microsoft.NET Framework v4.0 is required for the program to work. You can download it here: http://www.microsoft.com/download/en/details.aspx?id=17851
Installer created with Inno Setup...