Thoughts on...Obnoxious Ringtones.

I spend a lot of time studying in the library at my school. I do this because studying at my place is like conquering an obstacle course of distractions. The library is supposed to be a sanctuary from these distractions. However, when I've got 150 pages of reading to plow through in a single night, and I hear someone's cellphone blare Lil Wayne at an earsplitting volume, I feel like ripping my hair out and setting it on fire.
It's not just the atrocious song that drives me absolutely up the wall, but it's the fact that the owner of phone never makes more than a half-assed effort to silence it. Or even worse, they'll pick up their phone and proceed to have a 5 minute conversation without even leaving the room.
I suppose I'm old fashioned when it comes to cell phones. I roll my eyes when people pick them up in restaurants. I grit my teeth when I watch my mom surf the internet while she drives. But there is no way that someone can think that broadcasting their x-rated ringtone in the middle of a god damned library is somehow acceptable!
Similar to the obnoxious ringtone people, there seems to be a new species rising among public and highly inappropriate places. These people like to blast entire songs on their cellphone speakers. Because why would they use a set of earphones when everyone within a 100-foot-radius can hear the absolute horse shit they're listening to? I've been a victim of this type of torture while walking down the street, riding in train cars, even in elevators. Yes, that's correct, a girl in my dorm last year liked to blast Cascada in a tiny confined elevator.
Do I have a huge stick up my ass? Am I a total bitch? Or is this seriously inconsiderate? People will never always see eye-to-eye on certain types of etiquette, but isn't there a universal rule against subjecting strangers to horrible crap?
Ugh, people...