I am hoping to get this set up for my 4 Rios, but can anyone who already uses this answer a quick question.

Is the playback REALLY in sync?

If I play FM radio in one room and DAB in the next, the delay is so irritating I've given up on DAB in the house. My concern is whether the Rios will actually all play the same thing at the same time or if there will be slight delays which will cause a horrid echo effect. My music is all VBR encoded and the tRio docs indicate this makes it worse, can anyone coroborate that?

Can I really get my VBR music playing in sync from all the Rios?