Thanks
I assume by 'receiver' you mean the appropriate port on the monitor for that optical audio cable? Honestly I don't know if I do (I'm not even sure if it has speakers to be honest) since the monitor isn't actually with me yet.
If it doesn't (which would assumably also then mean it doesn't have speakers), the only ways of audio I'd be left with are my headphones or PC speakers - neither of which I'd have a clue what I'd need to pass the audio to them (since they're obviously both just 3.5mm jacks that plug into the back of the PC or whatever).