You are downloading the Virtual Instruments XAP file v188.8.131.52 for Windows Phone. Virtual Instruments is a free and useful Music app: Virtual Instruments on your Windows Phone is a great App for the kids.Play a variety of musical instruments Steel Drums, Flute, Electric ... You can now download the offline XAP file to install & try it.
Download Locations for Virtual Instruments 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 Virtual Instruments XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.