The file extension STY is used by the music software Band-in-a-Box by PG Music for Styles. Band-in-a-Box is an application for musicians that creates the accompaniment of a soloist in a specific style of music. It also has a MIDI sequencer and virtual instruments.
The STY files contain information about different music styles that enable the program to create a backing track in the desired music style.
Most often resolving problems with opening STY files is very simple. Just install an appropriate program that supports such files. All of the listed programs support STY files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of STY files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate STY files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the LyX/Mac applications is not on the list, select "Browse" option in order to manually locate the directory where LyX/Mac has been installed.
Sometimes problems with opening STY files may not lie with the application itself, but can arise due to other causes, such as: