this was customly added to our website. there's another current discussion about this: http://www.joomlathat.com/support/music-collection/music-collection-extensions/default-message-when-no-playlist-loaded-in-jwplayer-like-demo-site-and-default-album-image

It's not fair.
You show demo of your component that actually not have the same options.
My idea, that player module must have admin options with text field, where I can insert specific text.
But I need to learn different forum topics and make "hacks"

oh, come on.. it's just a text in one file, nothing more.. there are no "hacks".. (that user on that forum post simply tries to do "more", but the basic text that we have and I point him to it's just this, a text on a file, there's no configuration, no programation, no nothing... it's almost like having it in the module params.
but don't worry if you want it on the module params, I will add it.

I'll explain.
In previous version your module was empty.
I wasted time and drawed images, that was displayed in empty player.
Now, I updated player to latest version. All my changes lost.
I don't want draw new image for this module.
I have no time for this. I have more than 50 modules on site, and I need to create specific layout for each of them in my template override html directory.
So, it will be great, when developers provides their products, that works "out of the box" - without any edits any files. We have admin panel for any our extension, I think we don't need to edit files at all.

I'm sorry that you lost your changes.. but you should have saved them in a backup.. when you upgrade some module/plugin/component, the files will always be overriden..

anyway, as promised I already uploaded a new version for the module, 2.3.4, in which you can define the text in the module params. there you go!

Thanks for the option.
It will be right, that explanation text for the player displays only, when player is empty.
Once user understand how to add songs in player, he longer don't need this hint.