Certainly. I'm aware that, now that I know there's an issue, I can work around it by outputting to WAV or AIFF at the desired samplerate and encoding the MP3 from there using third party external software.

The real issue is that the MP3 bounce down feature in Logic is there for the sole purpose of allowing me to skip that external step in my production pipeline. If the feature is lacking, then it doesn't save me the step and so the feature is bugged.

What I really want to know is: is this really the issue I think it is, and if so, how widespread? If the empeg-car is the only MP3 player that can't handle these files, then maybe it's not worth their time to fix the issue.