syncing is easy, just set in on the machine with the audio playing the a sync ID on the layer, then on the machine which needs to be synced set the layer play mode "sync to" and use the ID chosen before....

depending on the version you are using you could also choose which network-port you would like to use to send/receive the sync-data

sizing question:
if your content is 512x512 pixel and the mix as well, set the layer to "unity scale" in the visual-efx of the layer, this way your content will be played back in the exact pixelsize it was created.