If you take a look at the release announcement:
openMobile 0.6.0.16 Released (3/8/10)
You will see that linux support was dropped from the last build but is coming back in the next one. Theres also links to documentation, the current changelog, etc. Assuming you grabbed the 0.5 release (which really doesn't contain much on linux) the binary should be in /opt/OpenMobile-0.5.