[Five]

the checksum stored in the header is not md5, it is something else, the same thing that 'shntool md5' aka st5 uses and is generated using the decompressed audio. APE files are also able to be self-tested, but I don't know what checksum they are using in the header and recommend using st5 because its useful for comparing lossless transcodes to verify if they are identical or not. TLH does all this and more. Of the lossless formats allowed here, only SHN cannot be self-tested. The self-test just checks that the file will decode properly.