You are downloading the StreamTube XAP file v18.104.22.168 for Windows Phone. StreamTube is a free and useful Entertainment app: Watch YouTube Live events on ANY Windows Phone device in any quality available, share links to live events you liked with your friends and keep track ... You can now download the offline XAP file to install & try it.
Download Locations for StreamTube 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline StreamTube XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.