In order to ensure you have uncorrupted, unmodified downloads, you may
want to use a md5sum program to verify the downloads:

930ed2d9e038067e362c7b24cd76fb6e BZ2_MPDlls_v13PublicBeta2.zip
e4c66f4b21870cc218088d02e255c544 BZ2_v13PublicBeta2_english.exe