I have arguably the second best "music" "news" name there is. MusicNews.com is obviously the best however the guy who owns it wouldn't sell it to you for $100K - I guarantee you that.
P.S. I would also give you two "fringe benefits". One being, I'd link to your MusicNewscast.com site from my social networking site that I'll be starting very soon.
I also have two other domains that would work for a music news site:
MusicWrapup.com - wrapup or wrap-up is one word
NoteNotes.com - I'm including this because you didn't 100% rule out a non-"music" name, sorry if I misunderstood
If you'd like, you can PM me and I'll mention some available names that might work.
Here are some names.
The most appropriate imho: MusicAccent(dot)com - "accent" is a good word in relation to news and as a small bonus it is also used as a musical term.
Another appropriate one: MusicReportage(dot)com
And another one but it would be better for a little bit of a different project: MusicThen(dot)com