Corvin, one main thing that comes over is that you believe you are right about this to the extent you're unwilling to tolerate disagreement.
This is so true that your attitude to parents with different parenting styles boils down to saying 'see what happens in a few years', as though you think we will have learnt the error of our parenting ways by then and can tell you how right you are; do we need to do that? You seem to know already.
Obviously it's your right to do what you're doing, but it still doesn't mean you are right. There's a difference between;
"You're not coming home at 4am 'cause all your friends do sweetheart, I know you'd be fine most of the time but it's the times that you wouldn't be fine because of SOMEONE ELSE'S actions (an unarguable fact) that make me say no, and make it something where what I say goes."
... and;
"I think you're not mature enough to listen to this music (opinion one) because I feel such anger in music can be damaging (opinion two) and I feel that anger and angst as portrayed in this music does not have a constructive end (opinion three)."
Your 17 year-old daughter almost certainly realises this.
One it's reasonable being unmovable (and offering to do compilatiosn is akin to offering to give someone a book back after you've taken out the chapters YOU don't like; it's not really compromise, it just looks like it but you still get 100% your own way) about as it's factual. The other... well, you don't know at the end of the day that you are right, do you? But you're certainly willing to behave as though it were something factual. Immovability over something that is ultimately a matter of opinion is not as reasonable as immovability over something that is factual.
I'm glad you take an interest in other things and not just the obvious. You say;
I do not object to controversial material when it goes a bit further than just vile language and solutionless angst.
Hmmmm... I think a lot of 'violent music' (or at least what I'd term violent) ALSO goes a bit further than just vile language and solutionless angst. I mean, I know people who would describe (for example) Radiohead as 'solutionless angst', whereas I find their music addresses angst and finds joy in unexpected places (listen to 'Lucky'). Eminem is another example where seemingly violent or misogynistic or homophobic 'roles' within his songs allow him to better criticize the actions of such people.
The drive to work thing would show you that no matter what you think and no matter what your level of maturity, some music will get you to work five minutes quicker. Try it.
Re. violent movies; seems that a lot of people are worse off than "a mindless person".
I lost the URL for this and can't be aresed to look for it again as I'm on dial-up today...
Many psychologists seem to agree that the more violence viewed, the more accepting children are of violence, the more it desensitizes them, and the more likely they are to become violent. Dr. Eron and Huesman of the University of Ilinois did a 22 year study of violent behavior due to "a diet of violent entertainment."
The quarter of the children with the heaviest exposure to violence in 1960 at ages nine and ten were found to be convicted of of criminal offences during their adult lives 150% more often than the quarter of children with the smallest exposure to violent entertainment.
One final thing that has also been bothering me. With such absolutes in place, how is she going to fare when she does have her own home? Rather than gaining experience over making decisions herself, even over what CD's she listens to, she has it done for her by rules. Learning to figure out the right thing is far more important than following rules; rules aren't always right, as any xJW can tell you.
Anyway; happy child rearing.
Oh, as for what I'd consider unsuitable... well, I just burnt 'Little Earthquakes' for my 14 year old; she and her sister love it almost as much as the Beatles. I did think about leaving 'Me And A Gun' off it - primarily because of my ex-wife JW reation, but though better of it. Do Alanis Morrisette and Tori strike you as violent, b-t-w? I think I'll leave 'Happiness in Servitude' until they're a bit older though...
If I found out she was listening to music/reading books/watching films that promoted misogyny, homophobia, racism et. al., I would really want to engage her in debte about it. I've always had really good results with actually discussing things without knowing in advance I'm going to not care what her opinion is in advance as I'm so right.
But 'angry' music? You may as well ban 'unhappy music' on the basis it's unhealthy for your kids.