Noise "click" at end of tracks

I'm using Audacious 3.4.2 under Ubuntu 13.10 connected in a hi-fi system and I have a small but annoying noise "click" after each track... even between tracks when using playlist.
Is this a recognized bug ?
In the same machine I have Winamp under Windows with no problems.
Except by the "clicks", Audacious sounds very good.