The application doesn't have a fancy interface, it only does what it's supposed to, and does it well.
Here is a video with an older version of EarCandy and Skype in action:
(Watch it in full screen)
Some cool EarCandy 0.4 features:
-If you plug in an USB handset, the audio will be automatically transferred to it.
-A tray applet that looks like the Gnome volume applet lets you adjus the behaviour.
-You cna easly adjust the sound fade speed.
-You can lock the volume: in case you don't want EarCandy to change the volume anymore, you can lock it.
-Smart volume detection: fixes some problems with YouTube. Before, if for instance you played and then stopped a YouTube video, the sound in your music player would have been turned off with no option to turn it on. This was fixed in version 0.4.
-In this version, EarCandy tries to figure out which application is a video player, a music player and so on, so it can automatically add them so you don't have to do it manually.
To install it, open a terminal and:
bzr branch lp:~killerkiwi2005/eyecandy/0.4 earcandycd earcandy./ear_candy
PS: if you had an older version of Earcandy install, remove remove it before running 0.4
Update: Ubuntu users can download a Earcandy .deb file from here.
Then play some music in your favourite music player and then play a YouTube video.
Update: Earcandy 0.5 is out