[FFmpeg-user] Get sample rate in mp3 files

[CMG DiGiTaL]

Hi,
I'm creating a bat file that will access a folder with several mp3 files. I
would like to be able to select in this folder only the mp3s with a sample
rate of 48000 khz and copy them to another folder where I will change from
48000 khz to 44100 khz. What command can I use to select only 48000kHz mp3
from original folder to destination folder?  I will use ffmpeg in a batch
file.

thanks
clamarc