I dug around online, and found this site; the solution wasn’t in rebuilding my project, but rather in the comments.

Go into Window > Preferences > Java > Editor > Content Assist > Advanced and make sure “Java Proposals” is checked.

If you find that some members are missing, you may need to muck with some of the other checkboxes in that screen. However, when I checked “Java Non-Type Proposals”, “Java Proposals”, and “Java Type Proposals”, every member was duplicated in the list. That’s not damaging, but it is irritating. Just leaving “Java Proposals” checked seems to have made everything happy once again.

(Soapbox) As long as the Ubuntu community thrashes and resists loading, BY DEFAULT, the codecs that everyone uses, Ubuntu will never be adopted as a viable desktop OS by the masses. The ability to handle media right out of the box is integral to making friends with the user. As a tangent to that, I still to this day have not found a good media player for Ubuntu. All of them are broken in one way or another. But that is a topic for another post… (Soapbox end)

Now that I’ve got that off my chest, here’s how to enable MP3 support in K3b.

1. Close any running K3b windows. Since this process needs to work on K3b, it needs to not be running.
2. Open a terminal. This can be done via Applications, Accessories, Terminal.
3. Type “sudo apt-get install libk3b3-extracodecs”, without the quotes, and hit Enter. You should be prompted for your password; go ahead and enter it. You will be confronted with a list of packages your system needs to download. Press “y” for yes, and hit Enter. Aptitude (the program that manages the software on your computer) will download and install the extra pieces of K3b that allow it to open MP3s, as well as other formats that were not included in the K3b core. When this is finished, you can feel free to close the terminal window.

And you’re done! You should now be able to use K3b with MP3 files.

If you encounter any problems, or have ideas for improvement of this tutorial, please leave me a comment.

The thumbnail creation buttons are greyed out. (click to see full image)

I go to insert a picture into a post, and I get the screen with information about the picture I just uploaded. The option buttons allowing me to use a thumbnail-sized version of the picture are greyed out, however. The picture inserted into this post is not a thumbnail, but rather a full-size, scaled down by the browser, not the server.

Since this site is currently hosted out of my own basement, I need to conserve bandwidth. I have a cap on my server’s upload speeds, so ultimately not being able to use thumbnails is going to hurt the end user; the site will just take forever to load.

Now, I’ve gotten some hints that this is an indication that I am missing GD in my Apache installation. It doesn’t show up in my phpinfo() dump, so that’s the first thing I’m going to try. I will post back when I’ve got it figured out.

EDIT: Well, I figured out how to install GD; a bit of Googling around found this. It seems to be a bit dated; also, I am using PHP5, not PHP4. Issuing the command “apt-cache search gd” showed me all of the Debian packages with “gd” in the name; the one I want is “php5-gd – GD module for php5″. I ran “apt-get install php5-gd” to install the package. I restarted Apache by issuing the command “apache2ctl restart”, and the option buttons were enabled. Mystery solved!