I have Ubuntu 12.10 for x86-64 on my PC and I'm trying to run a
.jnlp file. I've installed Java 7 and the Java plugin for Mozilla Firefox manually (because there is no
.deb package for Java 7 for Ubuntu).
Whenever I double click a
.jnlp file, Firefox is opened and it gives me the option of opening the file with Firefox or saving it. If I click save, it download the file I'm trying to run, and if I click open with Firefox web browser, it opens another tab and asks me again (in the new tab) to either open or save.
I used to run the exact same file on Debian, so what should I do to run this file on Ubuntu?