http://downloads.cepstral.com/cepstral/x86-64-linux/Cepstral_Allison_x86-64-linux_5.1.0.tar.gz Make sure you download the 64bit version. /b On Aug 30, 2009, at 2:33 PM, Pete Mueller wrote: > I don't think Cepstral supports 64-bit, as the SDK is 32-bit.