Nice voice. It makes we want to immediately check out securely.
Home Audio Production Good Practices.
I would install the Lame software in Audacity and use that to make the MP3. Scroll down.
http://www.audacityteam.org/download/mac/
And while you’re there, install and use Audacity 2.2.1. 2.0.6 is really old and no longer directly supported.
ACX Audiobooks recommends a minimum MP3 quality of 192 constant rate for submissions. That’s significantly higher than many common lower rates (generally selected for space saving and speed rather than sound quality) and it should not be possible to detect any MP3 compression damage, even after post production. A slightly softer recommendation is do everything in Mono (one blue wave on the timeline), not Stereo. Mono appears in both ears in a stereo music system at half the file size.
http://www.acx.com/help/acx-audio-submission-requirements/201456300
I would not use fancy-pants filename characters. Since the goal is to be acceptable to as many clients as possible, only use upper case, lower case, numbers, -dash- and underscore. That’s it. Those characters are unconditionally acceptable to everybody on any computer. Today is not 1/24/18. It’s 2018-01-24. That’s one ISO accepted format. The dashes are optional if you run out of room. 20180124 a bit harder to read, but also correct.
If you want to be truly obsessive, stop using filename spaces. MyVoiceTest_2018-01-24.wav
If you ever wondered why some software downloads arrive looking like that, this is why. Some older tools and services are sensitive to spaces.
Make a WAV (Microsoft) sound file as your primary product and archive backup. You should be able to point to two separate places that have copies of your finished shows. The first time your laptop doesn’t start this becomes a Really Big Deal.
Burn special client requests and the ACX MP3 audiobook submission from one of those WAV copies. Audacity Projects are not recommended for archive backups.
Never edit an MP3. The sound quality goes down when you do.
Never edit a raw voice recording. Export it as WAV when you’re done presenting and edit a copy.
I think I hit most of them.
Koz