You are downloading the Airstem AppXBundle file v2016.1203.943.0 for Windows Phone. Airstem is a free and useful Music app: ---Musicus is now Airstem---Explore the world of music with the Airstem. A music search and match engine for music discovery. Enjoy music with a ... You can now download the offline AppXBundle file to install & try it.
Download Locations for Airstem 2016.1203.943.0 AppXBundle file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Airstem AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.