You are downloading the Soundtracker XAP file v220.127.116.11 for Windows Phone. Soundtracker is a free and useful Music app: Soundtracker makes it easy to discover and play the music your friends and your neighbors are listening to. Use Soundtracker to create your own radio ... You can now download the offline XAP file to install & try it.
Download Locations for Soundtracker 18.104.22.168 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Soundtracker XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.