You are downloading the 8Stream AppxBundle file v2015.1017.1332.0 for Windows Phone. 8Stream is a free and useful Entertainment app: 8Stream is an unofficial Twitch.tv client for Windows Phone. You can watch all streams in any qualities without limitations.=== App ... You can now download the offline AppxBundle file to install it.
Download Locations for 8Stream 2015.1017.1332.0 AppxBundle file
To install it manually from an SD card, choose one of the server location above to get the AppxBundle file for 8Stream, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.