Refering to HERE (The gallery which I wanted to see the I/O panel)
DA5000 Pro can accept both stereo or 5.1ch input.
Ur device must able to output 5.1 in order to utilize it by connecting to 5.1ch input. If your devices have only stereo output, just connect them to PC (Left/Right for White/Red with RCA cables). You can find exactly the same looking port somewhere around your TV with both red and white audio output. If your TV has 5.1ch output which is quite rare.
Referring to HERE, PS3 can output 5.1 via HDMI. If your TV can handle 5.1audio and accept HDMI input, you may use your TV to decode the digital signal and transfer the audio signal to ur speaker. You'll be connecting your PS3 to TV's input and then output audio from your TV. Maybe you should wait for some DA5000 pro owner here to give comment. If u're just using the Stereo Input on DA5000 Pro, I'm not sure whether the speaker is capable of upscaling 2.1ch to 5.1ch to play on all satellites though.
Afterall, just something from me. Need experts to clarify it as it's 5.1. If it's 2.1, just simply connect through RCA  or from 3.5 out to RCA for left and right only. 5.1 got Front/Rear/Center/Sub which is more of a mess xD.

Yea... if you get another amplifier, your DA5000 Pro might "explode" JK but it will spoil. Why don't you just connect ur ps3 to TV and output audio from TV? LCD/LED tv nowadays mostly got HDMI input which these tv will decode the av digital signal from input.

nope... you don't need amplifier as DA5000PRO alone inside already have amplifier

you need a DAC (Digital to Analogue Converter)

But that would means that i have no use for my DA5000 pro?? I connect my PS3 to TV and then i want the audio from the TV to output to my speakers. Where can i get this Digital to Analog converter??

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Added on May 29, 2011, 6:18 pm
Is there a DAC for 5.1??

If you're not connecting your PS3... Yes... But ur  speaker is connected to the DVD player instead of TV. There will be something weird. Sometimes, ppl is used to switching off TV in which when the display is gone, your sound is also gone. If you output via DVD, you switch of the TV, not the DVD, the sound still going on. Lol~ I really think rarely got 5.1 output on TV la. Look at THIS. Maybe something that you want but it should be quite expensive. Let other sifus help you out. gtg packing~

Then?? How about other decoders? Astro? ... ... All sound output from TV arh?