Macbook Pro Digital out to Speakers (analog?)

Is there something to take the TOSlink from the Macbook and convert it to 2 x jack outputs to power my Monitors?

I have a stereo jack to 2 x phonos (the other connection option on the ADAM's) but the buzz and noise is awful (and thats not my music) 🙂

I know the Toslink / Spdif is ok and clean on the Macbook, so just wondered if there was a quick clean convertor for making this my output to the monitors?