You are downloading the Ringo XAP file v188.8.131.52 for Windows Phone. Ringo is a free and useful Social app: Ringo lets you make low cost international calls without using the Internet (WiFi or 3G). You can call any mobile or landline phone number anywhere ... You can now download the offline XAP file to install & try it.
Download Locations for Ringo 184.108.40.206 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 Ringo XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.