Blu-Ray MKV has video but no Audio, although selected

[Beastmaster451]

I'm new to MakeMKV, and couldn't find my question here in the forum, although I presume this has been answered before. I've tried to rip a few different Blu-Ray movies, which rip to mkv with no errors, but only one so far has had audio even though the audio stream was selected. What am I missing? Could it be a configuration or driver problem?

Thanks for the assist!

[Woodstock]

Most likely, your playback software does not support the audio track selected. Are you choosing ALL available tracks, or just the first listed for your language?

A number of BDs available now come with advanced audio tracks, and you have to select the proper one(s) for your playback device(s).