Okay, I just uploaded a tarball that has the files within a containing directory: ooRexx-4.1.0-source.tar.gz

I agree with you that not having a containing directory is somewhat annoying. So much so that I always do:

tar -tzvf xxx_yyy.tar.gz | more

Perhaps with the next release you could check while it's in the beta stage. I'll try to remember to check it myself.