You can lookup an entry.
The sounds work.
What does not
phonetic marks are not shown and instead ? is shown.
What was not tested
Everything except a simple lookup
It has a linux setup file. But, it does not work out-of-the-box for amd64. As a workaround go to [folder containing longman setup files]/linux/setup.data/bin/Linux/ and make a copy of "x86" folder and put it in the same folder where "x86" exists. Then rename the copy to amd64. Now you can install longman with linux setup file but it does not run. It gave an error I could not solve. So I used Windows setup with Wine and it installed and ran happily!
|Debian GNU/Linux 8.x "Jessie"
|Jun 17 2015