Yeah... I hate that...
I listen to some of my stuff on my MP3 player and for example.... in the Missing person tune at 2:06 with headphones when I'm not really focusing on the music....I swear I hear a phone ringing on the left side..... but in a detailed analysis of the tracks.... it's not real. I think it is how several of the tracks and the ringing notes play against each other....
gets me every time.... I have, more than once, hit pause and grabbed for the cell phone thinking it was ringing....