You listen to random 1-2-3 hour psychill stuff. You jump a little. You hear 1 or 2 tracks that's cool, the rest is mediocre.
You DL it. You get the music program Audacity. Import. Cut out track. Fade in. Fade out. Export as file name with added time stamp at the end.
Now you can make your own long-ass compilations of great music.
It takes ............ 2-4 minutes depending on your mood and how smooth it goes. Well invested minutes.