I have no idea who or what is respected in Islamic internet circles, Amy. Those were just three results that came up on Google when I typed in “Islamic music prohibition” that show a range of opinions that I have also found among people I actually know. I personally actually agree (that Islam does prohibit music), but to pretend as though all are in agreement on this issue is not honest.
For a minor issue, there do seem to be a lot of websites that concern themselves with this issue, so clearly it is important to Muslims in their everyday lives, if not a major point of doctrine.
Other sites and postings found on Google for “is music haram”:
themodernreligion.com/misc/hh/music.html
geocities.com/Heartland/Flats/1716/music.html
islamawareness.net/Music/music_fatwa005.html
jamaat.org/qa/music.html
islamicity.com/forum/forum_posts.asp?TID=8695
shahbazcenter.org/is-music-haram.htm
From what these links show, it seems like most schools of Islamic thought
do agree that music is haram, and yet there is variation: vocal music is permissable, vocal and tambourine music is permissable, no music is permissable, music in and of itself is not haram (according to the sufi page), etc. It makes no difference to me if Muslims think music halal or haram, except to the extent that musicians and singers all across the Muslim world are being threatened, physically punished, and even
occasionally murdered. That is not okay in any way, and is especially heinous if what you say about this being a “minor” issue is true.