not a networking expert, but isn't all of this a complete waste of effort when you can just make the sample buffer deeper? uncompressed CD audio is only 1.5mbps, so it's not like the cost of dram is going to be a limiting factor.
Yes. It realistically only matters in cases where the bandwidth is so low you're teetering on the edge as it is or it's a live two way conversation where introducing too much buffering will create noticeable lag.