.RSO File Extension
File Type 1NXT Brick Audio File
What is an RSO file?
Proprietary audio format used by LEGO's programmable MINDSTORMS NXT robot; RSO files are typically used to play short alerts or other system sounds; they can be converted to standard .WAV files using the RSO conversion utilities.
NOTE: LEGO MINDSTORMS NXT "evolved" into LEGO MINDSTORMS EV3 in 2013.
File Type 2ARIS Report Script Object File
.RSO File Association 2
Script used by ARIS business reporting software; used for generating a report that evaluates the database at the Object level (other levels are Database, Group, and Model); used for providing business intelligence analysis.