BBC radio london programmes - why do my recordings end up "mono"?

[dinkypumpkin]

On 08/09/2013 23:51, Mable Syrup wrote:
> When I download progs from BBC radio london, they appear to become smaller than the expected size and my player (Totem Movie Player 2.30.2 on Ubuntu) claims that they're mono.   They also appear as mp3.  Like this:

That's how local radio programmes are encoded.  It doesn't match the 
estimated size in the --info listing because the stream metadata still 
identifies it as a 128 kbps stream, rather than the 80 kbps actually used.