If your favorite audio or video broadcasts are spamming you with obnoxious ads (or anything else you don't like) an Apple patent could yank them out by the roots -- then substitute your own content. First, the system would check media content in real time through audio analysis or metadata scanning. Then, it would determine if its "of interest" to you by checking it against a profile based on your listening habits or personally defined preferences. Finally, if it thinks you're into a particular stream, it would continue playing it, and if not, it could blast something from your own collection.