Convert sndr to sou

What is the difference between .sndr and .sou?

Description: The SNDR file extension is used for older 8-bits mono sound format which was used in old Sounder program.; The .sou file extension is associated with SBStudio II, a music composition and editing program. A .sou file represents a SBStudio II Sound File, which contains audio data used by the software. These files are typically used to store instrument sounds or sound effects that can be integrated into music tracks created within the SBStudio II environment. The format is designed specifically for use with the SBStudio II software, making it a specialized audio file type for music production within this specific program.