Why?
Using Jamroom
Its your timeline you can disable them OR you can turn on the "Media URL Scanner" module:
https://www.jamroom.net/the-jamroom-network/networkmarket/131/media-url-scanner
and have those links converted into the actual youtube video that will play and the actual, not sure what that is, looks like maybe an audio file or video file uploaded to your site perhaps.
If you want to disable them or not add them to the timeline one way is to uncheck the SHARE TO TIMELINE checkbox when the item is created, there are other ways too depending on how you want to proceed.