Notes about the OB! file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The OB! file type is primarily associated with 'Orbit Downloader' by OrbitDownloader.com. Orbit Downloader is devoted to new generation web (web2.0) downloading, such as video / music / files from Myspace, YouTube, Imeem, Pandora, Rapidshare. If the download is incomplete you will see an .OB! File. The extension will change after the download completes. Orbit supports .METALINK files.