Discussion under Consoles, part of the Gaming Zone category on TechEnclave; Members is their a way to connect a PS3 to Altec lansing MX5021 speakers....
Just get a dual RCA female to 3.5mm female adapter/cable. Set the PS3 to output audio via the the A/V cable and then bridge the male left right RCA jacks of the A/V cable to the male 3.5mm pin of the MX5021 using the adapter/cable you got.
^The MX comes with a female-3.5mm jack to dual RCA female cable. You'd need a 3.5mm male-to3.5mm male cable so that you can plug this cable to the Aux input on the pod which'd override the input thru the sub.