I have 1000 mp3 files (like podcasts) approximately to be compressed, they have 64kb/sec bit rate in general. (a few in 192kb). Totally they take up 7,36 GB. What I want to achieve is to reduce it down to 1 GB with an acceptable quality.
I came up with NAudio tutorials which edit the sample rates to lower size but eventually it didn't help me. (Some of files' size decreased but other some's increased)
I am too far away to audio world, is there a way to achieve this programatically?