The streams are just the name as a youtube video. For example if you click the "lofi hip hop radio - beats to relax/study to" in the bottom left (r what ever you are on) you'll see all the streams. Copying that name and pasting it in Youtube will show you the stream.
Though I do agree a link to them (since there is no mention of Lofi Girl anywhere for example) would be nice.
The project has a better chance of survival if it follows the rules of the platform sourcing their content. I think that warning somebody that they're standing on a cliff edge is the polite thing to do, even if the cliff is man-made.