I'm not sure the meteor hit the zinc plant. Considering how loud the sonic booms were it's possible that they caused enough structural damage to an old brick building to result in a partial collapse.
I wish we had more information.
Edit: on second thought, it could easily be a fragment, we'll see.
Their is a continuum between dance music and mainstream pop music in Europe in the same way their is for hip hop in the states. So it's not unusual for it to be played on standard pop radio stations.
http://oleg-kozyrev.livejournal.com/4468083.html
Examples of other meteorite strikes in the past:
http://oleg-kozyrev.livejournal.com/4468452.html
Damaged zinc plant? https://twitter.com/Dokhrimovich/statuses/302269134685757442
Reuters: http://www.reuters.com/article/2013/02/15/us-russia-meteorit...
AP News Story: http://hosted.ap.org/dynamic/stories/E/EU_RUSSIA_METEORITE?S...
Video close to epicenter.. Loud boom then broken windows and alarms.. http://www.youtube.com/watch?v=K0cFOIoITW4
Hashtag #Челябинск on twitter for more info.