In fact not at all important. Keep this as minimal and clean as possible. If it were a gallery app, it would be good to have a built-in audio video player. If any file is clicked, it can just show us what other apps can play audio or video. If it is requested by a lot of people., Then fine. Otherwise it is the least asked feature.

It's nice to have an alternative to other players that automatically add audio files to your library (Google Play Music, Amazon Prime Music, etc). That way I can "preview" audio files and delete them without launching an external app, and I don't have to delete them multiple places.

Fine idea

I like listening to WhatsApp audios without opening the app.

HTML5

Very useful

Pues no es de suma importancia pero sería muy agradable poder reproducir música sin necesidad de estar redirigiendo a la app de música predeterminada del dispositivo

Would love an easy app to experience 

Желательно чтоб был встроен vlc плеер. Он бесплатный. К тому же он поддерживает все форматы. Это повысилоб спрос.

I consider it important because it would be very useful

Must need & important for all of muaic lover. Can you emagine, all of function in one app? Yes, Droid Commender can do this. I trust on it.

Quiero reproducir los audios directo sin depender de otras aplicaciones. Si me convence lo compro.