Orca which file for the latest orca

[MICHAEL WEAVER <michaelweaver1 btinternet com>]

Which file should I download for the latest version of Orca if the one 
packaged for Ubuntu in Universe is out of date or doesn't it matter as 
to which format type is used?
Do I need the one with the .ta extention or the .bz2 extention?
I might be able to burn the two zipped files to CD but I don't know if 
both would try to be uncompressed at the same time and cause a problem 
if I put the CD in my laptop which is why I ask which file extention?
I would be doing it this way because I am getting help to install Orca 
from someone at a couple of LUGs I attend.