Hi guys, I solved the problem today. Maybe not through the best way, but did work.
The program I wanted is ManDVD. It is in karmic repositories.
I edited the sources.list and added as follows:
In my sources.list there is some lines related to my version of mint:
oneiric main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu/
So I copied and replaced oneiric for karmic which is the version that contain the ManDVD.
Then updated, and installed mandvd.
Luckly it worked. Then, after install mandvd, I deleted from the sources.list lines related to karmic, and updated again.
Now I have the sources.list as before, but with ManDVD installed.
There was no issue concerning dependencies during installation, at least with this package.
I have a question: Can I add newer repository on a older version of Mint? Example: I'm running mint 12. Can I add a Mint 14 repository? Which kind of problem may I have?
Thank you guys!