You are downloading the altSpeaker AppX file v22.214.171.124 for Windows Phone. altSpeaker is a free and useful Entertainment app: A fun text to speech app with various languages and settings such as gender, pitch and ... You can now download the offline AppX file to install & try it.
Download Locations for altSpeaker 126.96.36.199 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX 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 altSpeaker AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.