That's kind of the challenge, finding aerobic stuff that suits you as an individual and isn't too boring to you personally.
I've never had to run or bike with music or anything, got enough going on in my head to keep myself entertained. Plus I don't personally like being acoustically isolated from what's happening around me. Think it helps to be running or biking in the city though, especially the lakes region where there is always something to see around you. Same for running or going walkabout in nature areas. Keep seeing peeps with ear buds in and wondering why they bother coming to a wildlife refuge or nature preserve for a walk and than totally tune out and become completely oblivious to their surroundings. Not judging, to each their own, but I do not understand it but than again I've been a park and refuge fan since I was a little kid.
I get the need for distraction more for indoors workouts. Road stationary bike yesterday and that is less self entertaining. Had a TV screen so watched the second half of one of the WBB NCAA games. Still other things to track like time, resistance, distance, cadence, heart rate etc.....workout stuff. If nothing is on the TV, the music they pipe into LifeTime is pretty decent, no need to pack in my own tunes.