Audio frequency check for 4000+ files

[NewsFromHell]

Hello everyone,
Recently I noticed that I have many old mp3's which are 30 kHz and I want to replace them with better ones, like convert from FLAC to mp3 48 kHz 320kbps. So is there any software that can analyse all my audio files and tell me which ones are lower than 41 kHz? like in a log file?
I can check them in Audition but it will take me ages, so I need something more practical and fast.
Thank you in advance.

 

[rgd1101]

If you are using windows you can add column bit rate to your explorer windows

 

[NewsFromHell]

If you are using windows you can add column bit rate to your explorer windows

I dont need to see bitrates i know they all are 320kbps i need frequency checker to give me the pictures of frequency like this one

but I need a software which can do it for many files and export all those pictures to one folder