You are downloading the Real Microphone XAP file v18.104.22.168 for Windows Phone. Real Microphone is a free and useful Productivity app: Use your Smartphone as a replacement for a real microphone. Just connect your amplifier (or earphone) with the audio connection jack and start to ... You can now download the offline XAP file to install & try it.
Download Locations for Real Microphone 22.214.171.124 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Real Microphone XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.