Originally posted to the mailing list:
http://sourceforge.net/mailarchive/forum.php?thread_id=3885962&forum_id=5947

 I'm creating an icecast2 stream with ices2 and raw audio provided by 
 esdmon. esdmon duplicates the raw audio passing through esd (esound). 
 If I feed esd with
 
 	gst-launch filesrc location=music.ogg ! vorbisfile ! esdsink
 
 the audio from the sound card sounds fine. However, audio from the 
 icecast stream can be full of clicking. (The sort of clicks audible in 
 discontinuous waveforms.) I say "can be full" because the amount of 
 clicking depends on the kind of music playing. Quiet ambient music has 
 almost no clicks. Louder music with more beats clicks a lot. A 
 fantastic test song is "This Mess We're In" by PJ Harvey. For some 
 reason, this clicks a lot right from the get go.
 
 This clicking problem does NOT occur when I seed esound by either of 
 the following:
 * ogg123 -d esd music.ogg
 * gst-launch filesrc location=music.ogg ! vorbisfile ! fdsink | esdcat
 
 Also, I took icecast2 and ices2 out of the path by dumping esdmon 
 output to disk and listening to it directly. It was clickful.