You may now upload an .mp3 file directly to Spotlightr and it will work exactly the same as if you uploaded a video source.
Please see our short video tutorial here.
You will notice that by default we paste over a sample audio wave image as your video. This can be easily customized by setting a custom thumbnail image in player settings and this will overwrite the entire video duration.
As the next enhancement we are planning on adding audio visualization to the player. So please let us know what else you will find useful from Spotlightr when working with your audio files.
We are looking forward to your feedback and hope you will enjoy this enhancement.