Files with mce extension can be mainly found as some sort of source infrared command files for Sony CAV-M1000ES.
MCE file extension - Sony CAV-M1000ES common source infrared command file
What is mce file? How to open mce files?
File type specification:
File extension mce is most notably used in the Sony CAV-M1000ES receiver. Each file represents infrared control commands for a specific Common Source component that is not preprogrammed into the CAV-M1000ES.
A .mce file are normally "learned" by the CAVM1000ES using the handheld IR remote control of the Common Source equipment and the front panel of the M1000ES. To save the tedium of repeated manual programming, *.mce files can also be saved to your PC, recalled for later use, or even downloaded from the Internet.