I was reading a bit about them in power supplies. Am I right in thinking the current is going along the wire and sometimes there is spikes in it which would disrupt an audio circuit and what the cap does it the current goes into the cap and the cap sort of stores it before letting it out. It then lets it out as a nice smooth wave without the spikes - the spikes have been absorbed by the caps? I find it difficult to translate this to the caps in, say, the analogue output circuitry. Why would the audio signal need smoothed? Presumably these caps are doing something different? Cos if they smoothed the signal then the music signal would just get smoothed out wouldnt it? :confused: