Annotate mp3 fails

Hi folks, I’m studying a music book and try to attach some mp3 files in my note. For those .mp3 files, some of them can be imported and played well (great feature!), but some others couldn’t. They shows 0 length, but they could normally played outside of marginnote. Wondering how could this be addressed? Is there a specific requirement for those mp3 to be attached successfully? Thanks.

I converted mp3 to mp3… and it now works. Am not sure what has been changed. But I’m fine now.

Hello, Esparami. It is indeed weird, and if you have anything new to discover, you are welcome to come back with feedback.