It would be wonderful if we could link a library card to a MYO card using the Libby app (https://libbyapp.com) and have the audiobook automatically sync when connected to Wifi. Libby syncs with other external services these days, like Kobo ebook readers, so it may be possible.
A workaround is using the Overdrive Media Console to download the mp3s and then upload them onto MYO, but as Overdrive is being sunset it is likely that option is soon to disappear.