SZS Modifier software can be used to edit or convert all kinds of Mario Kart Wii files, including .kml and .breff. However, we couldn't find any relevant information or verify whenever kmp to breff conversion is actually possible or would make sense in first place.
Convert Mario Kart Wii course description file to Mario Kart Wii animated graphic file.
We found one software available in the database for this conversion.
Other operating systems or devices software - convert kmp to breff on other devices or OS
A program for creating Mario Kart Wii texture hacks
Convert from kmp file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.