For convenience sakes, here they are. 

OSX binaries are taken from a fink repo. 
Linux binary from Debian.org

drwxr-xr-x mike/wheel        0 2010-02-16 14:02 lha/
-rwxr-xr-x mike/wheel    55252 2010-02-16 14:01 lha/lha-linux-x86
-rwxr-xr-x mike/wheel   222576 2010-02-16 14:02 lha/lha-osx-i386
-rwxr-xr-x mike/wheel   212940 2010-02-16 14:02 lha/lha-osx-ppc