To be able to encode mp3 files with Sound Juicer on Ubuntu Jaunty Jackalope just install the package gstreamer0.10-plugins-ugly-multiverse.

If you then open sound juicer, in the preferences->output format->edit profiles you can now see the CD Quality, mp3 option.

The first time I ran it, the output format didn't had the mp3 option. I just edited the mp3 profile and tick two times the active checkbox.

Don't know if this is really necessary but now everything works. :D

If you don't have, first install mercurial:

sudo aptitude install mercurial

sudo aptitude install bzr

hg clone http://code.nsnam.org/ns-3-allinone

./download.py -n ns-3-dev -r ns-3-dev-ref-traces

cd ns-3-dev
./waf configure

./waf build

./waf --run=first

This one is definitely one of the better Linux apps I have ever used (right after git, vim and zsh)

Aria2 is a small utility for downloading files through the most used protocols: HTTP(S), FTP and BitTorrent. It also supports Metalink, which is a standard for describing multiple locations/protocols to download a file.

As always in Debian related distributions, installation is as easy as:

$> sudo aptitude install aria2

Let's try it: download files from multiple sources and protocols. We are mixing ftp, http and bittorrent.

$> aria2c ftp://dl2.foss-id.web.id/iso/ubuntu/releases/8.10/ubuntu-8.10-desktop-i386.iso http://darkstar.ist.utl.pt/ubuntu/releases/current/ubuntu-8.10-desktop-i386.iso -T ubuntu-8.10-desktop-i386.iso.torrent

*** Download Progress Summary as of Sat Mar 14 08:50:29 2009 ***                               
=======================================================================
[#1 SIZE:0B/698.8MiB(0%) CN:0 SPD:0.00KiB/s]
FILE: ./ubuntu-8.10-desktop-i386.iso
-----------------------------------------------------------------------

Aria2 is smart in the way it uses the multiple sources. It uses a slow server only when while it is beneficial to use it. If a small server has uploaded the rest of the file, the slower server will be swapped out in favor of the most rapid one.

Another Aria2 feature is the use of BitTorrent and Metalink checksums for verifying the various chunks of data.

Finally, Aria2 can also seed torrent files.

All this in a small application, with a very low memory footprint. Sounds cool doesn't it?

I've been having problems in connecting to the Wireless APs in my university. It seems to be completely random. Sometimes it connects, other times it fails.

I never pinpointed the problem, but I suspect the fact of always seeing around 7 APs with the same ESSID make Network Manager to not choose the one with the highest signal.

I've installed an alternative. Wicd is not so user friendly as NetworkManager, and it seems to not be yet totally completed, but you can choose to connect specifying an AP and not only the ESSID. It solves my problem and my connection is now completely stable.

Here's a little screenshot: