For "File size", we reccomend a setting of "200" (which means, you can upload each audio/video file upto 200MB size).
The following setting can be found at:
Dolphin Admin >> Plugins >> Ray Suite >> My Widgets >> Widget Settings
![Ray configuration settings](https://www.gigapros.com/members/images/ray-configure-settings.png)
Also, make sure that your folder ray/modules/music/langs have all the correct files for your current Dolphin version.