Your question doesn't make sense. You probably mean that your receiver has speaker-level OUTPUTS, and you're trying to connect self-powered media speakers which take a line-level input via a 3.5mm miniplug. Is that correct?
If so, no you cannot do this, you'll blow up the input on those computer speakers if you try to send them an amplified speaker level signal off the amplifier.
I didn't bring up the manual on that receiver, but I'm sure it will have some type of line level outputs, pre-outs, or record out or something like that on the back. Get an RCA to femail 3.5mm stereo miniplug adapter and connect your computer speakers to that, and you should be good to go. Or, if there is a headphone output off the front, turn it down low, and connect to that as a last resort.