You are downloading the Koto Lite XAP file v0.9.0.0 for Windows Phone. Koto Lite is a free and useful Music app: Traditional Japanese stringed musical instrument. Free lite ... You can now download the offline XAP file to install & try it.
Download Locations for Koto Lite 0.9.0.0 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Koto Lite XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.