The interval at which the preferences log file will be synchronised. Defaults
to 3600, i.e. one hour.
.TP
+.B queue_pad \fICOUNT\fR
+The target size of the queue. If random play is enabled then randomly picked
+tracks will be added until the queue is at least this big.
+.TP
.B sample_format \fIBITS\fB/\fIRATE\fB/\fICHANNELS
Describes the sample format expected by the \fBspeaker_command\fR (below). The
components of the format specification are as follows: