[This is preliminary documentation and subject to change.]
Load choonML metadata from the path specified in the constructor
This also loads the SFT (if ExtFileMode is true) but does not load any actual samples as the converter app should best be able to manage when sample data is needed.
True if successful
Thrown with error 104 if the SFT has a mismatch with the number of samples defined in XML metadata.
Thrown with error 108 if there is no sample entry for an SFT entry.
Both indicates a corrupt/incorrect CHML file.