Comment 13 for bug 945987

I think the quality=2 is just fine, should avg. around 192
Plus users can adjust if inclined to explore a bit

Possibly someone who uses/knows mp3 well could better advise but I'd be inclined to set the bitrate= line to either 96 or even 64
IIRC in VBR it just sets the absolute lower limit, so leaving down a bit gives VBR some room to do it's thing