A system (1,21) for controlling one or more light sources to render light effects determined based on characteristics of audio content while said audio content is being rendered on an audio rendering device, said system (1,21) comprising: at least one input interface (3,23); at least one output interface (4,24); and at least one processor (5,25) configured to: - control, via said at least one output interface (4, 24), said one or more light sources to render said light effects; characterised in that said at least one processor (5, 25) is further configured to: - determine, based on input received via said at least one input interface (3,23), whether a latency between said one or more light sources rendering said light effects and said audio rendering device rendering a corresponding portion of said audio content will likely exceed a threshold, - determine a degree of smoothing based on whether said latency will likely exceed said threshold, said degree of smoothing being higher if said latency will likely exceed said threshold than if said latency will likely not exceed said threshold, - determine said light effects based on said characteristics of said audio content while applying smoothing according to said determined degree of smoothing, and wherein said at least one processor (5,25) is configured to apply said smoothing according to said determined degree of smoothing by determining a fade-in duration and/or a fade-out duration for said light effects based on said determined degree of smoothing. at least one input interface (3,23); at least one output interface (4,24); and at least one processor (5,25) configured to: - control, via said at least one output interface (4, 24), said one or more light sources to render said light effects; characterised in that said at least one processor (5, 25) is further configured to: - determine, based on input received via said at least one input interface (3,23), whether a latency between said one or more light sources rendering said light effects and said audio rendering device rendering a corresponding portion of said audio content will likely exceed a threshold, - determine a degree of smoothing based on whether said latency will likely exceed said threshold, said degree of smoothing being higher if said latency will likely exceed said threshold than if said latency will likely not exceed said threshold, - determine said light effects based on said characteristics of said audio content while applying smoothing according to said determined degree of smoothing, and wherein said at least one processor (5,25) is configured to apply said smoothing according to said determined degree of smoothing by determining a fade-in duration and/or a fade-out duration for said light effects based on said determined degree of smoothing. - control, via said at least one output interface (4, 24), said one or more light sources to render said light effects; characterised in that said at least one processor (5, 25) is further configured to: - determine, based on input received via said at least one input interface (3,23), whether a latency between said one or more light sources rendering said light effects and said audio rendering device rendering a corresponding portion of said audio content will likely exceed a threshold, - determine a degree of smoothing based on whether said latency will likely exceed said threshold, said degree of smoothing being higher if said latency will likely exceed said threshold than if said latency will likely not exceed said threshold, - determine said light effects based on said characteristics of said audio content while applying smoothing according to said determined degree of smoothing, and wherein said at least one processor (5,25) is configured to apply said smoothing according to said determined degree of smoothing by determining a fade-in duration and/or a fade-out duration for said light effects based on said determined degree of smoothing. - determine, based on input received via said at least one input interface (3,23), whether a latency between said one or more light sources rendering said light effects and said audio rendering device rendering a corresponding portion of said audio content will likely exceed a threshold, - determine a degree of smoothing based on whether said latency will likely exceed said threshold, said degree of smoothing being higher if said latency will likely exceed said threshold than if said latency will likely not exceed said threshold, - determine said light effects based on said characteristics of said audio content while applying smoothing according to said determined degree of smoothing, and