Someone already had similar question but he wanted to convert FLAC into MP3. In my case I want to convert WAV into MP3 and the solution in the other question doesn't help me.
Workflow would be the following: I drop WAV files into folder A, they are converted as MP3 files into folder B. Converted WAV files would be moved into folder C so I would know which WAV files are already converted.
I would like to have full control for the MP3 encoding settings, e.g. bitrate, frequency, channels etc. I guess the best encoder for my purpose would be LAME but I think using iTunes is also ok. I work on Mac. Is there a way to do this automation? I have tried to use Automator but with bad success.