If your favorite audio or video broadcasts are spamming you with obnoxious ads (or anything else you don't like) an Apple patent describes a process to cut them out -- then substitute your personal content. First, the system would check media in real time through audio analysis or metadata scanning. Then, it would determine if it's "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. The patent claims even describe a TiVo-like time-shifting function -- ensuring you'd catch that entire guitar solo while not missing a single word from your favorite show.