You may have hit the nail on the head. the headset has come with a bluetooth adpater with 2.5 jack on the end which i presume is what you are talking about.
I had presumed this was just for use for mobile phone or something and dismissed this.
complete n00b here, so maybe like you say i shud just setup how i had it and plug this into the jack and walla!
If it works beers are on me!