You're here because you have a file that has a file extension ending in .etf. Files with the file extension .etf can only be launched by certain applications. It's possible that .etf files are data files rather than documents or media, which means they're not meant to be viewed at all.

An ETF file refers to an ENIGMA Transportable File created by MakeMusic Incorporated. The ETF file is similar to .MUS file but is composed of encoded data presented as a text based format and not binary. MakeMusic Incorporated is a company located in Minnesota. Its focus is to enhance teaching, making, performing and learning music. Among its tested products namely Finale, established Notation software for music has been called as the standard to use for users inclined to music. The Finale Notation is composed of Finale, Finale Print Music, Finale Notepad, Finale Song Writer and Finale SongBook. MakeMusic is also the creator of SmartMusic, interactive music software that allows any user to read and practice musical notes as directed by their music teachers. Music students who use a certain instrument play simultaneously together with the background sound or accompaniment and at the same time is being assessed by the program with regard to which part was played correctly and missed. When they have perfected the accompaniment, and then is the time for them to send a recording to their music teacher who then gives them a score.

Launch a .etf file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .etf file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .etf files aren't yet associated with it. In this case, when you try to open a .etf file, you can tell Windows which application is the correct one for that file. From then on, opening a  .etf file will open the correct application. Click here to fix .etf file association errors

Be careful not to rename the extension on .etf files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

A file extension is the set of three or four characters at the end of a filename; in this case, .etf. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.