Crescendo music scoring software supports export to MIDI (.mid, .midi) just fine. However, it is likely also the only way how to perform this CDO to MID conversion, as no other 3rd party software probably supports .cdo files from Crescendo.
Convert Crescendo music score to MIDI-sequention sound.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert cdo to midi on Windows
A music composer used to create musical scores
Convert from cdo 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.