Other than that, now you can dock some plugins that comes with such as album art, visualisation, lyrics into the GTK interface and advanced playlist columns, etc are also few of the noticeable improvements as well.
Anyhow below are few of the main difference the 2.5.0 version brings according to their changelog.
*. Now Audacious has the ability to keep playing a file while it's been deleted.
*. New "Shuffle" and "Repeat" GTK based buttons.
*. Better song information window.
*. New Cairo-based visualization added.
*. M4A cover art file support added.
*. Seek within Raw AAC files, etc.
So if you want to install Audacious 2.5.0 in Ubuntu (compatible with 11.04, 10.10 and 10.04 versions) then this is how you do it. Open your Terminal and issue the below command.
apt-get install audacious audacious-plugins-extra audacious-pluginsHow to install it in Fedora Core... for that use the below command in your Terminal.
yum install audacious
yum install audacious-plugins-nonfree-aac audacious-plugins-nonfree-mp3