Hm, no.
Technically this sounds easy, but synching various devices over the network has been a huge feature demand by many many people.
Either this way, or the other way round, having the music in “sync” is going to be very, very, very hard to achieve. I’d say almost impossible. As the cmoputer and also the soundbridge do buffer music.
If you mean sync to actually be accurate within a few msec, then it is very unlikely to happen.
If some ten seconds dont matter, then this is at least technically possible, and feasable. Still, someone has to come up with a concept and a solution. 😉