Specific post numbers are in the upper right above each thread. e.g.
http://niketalk.com/t/329154/the-thread-about-nothing/40620#post_16374919
But we're not going to allow people to use that to get around the rules.
In other words, if you're just posting a link to a post that contains a music video, then what's the point? Just to get around the rule?
Somebody who's interested in what everyone else is listening to at any given moment should participate in the thread in the Music forum. If you like that thread, subscribe to it. It'll show up on your news feed on your front page and you can see, in real time, how many new replies it's received since you last checked. Constantly linking to your additions to that thread in here would be considered spam.
You can follow favorite users and they can follow you. You can subscribe to favorite threads.
If this thread becomes "mini niketalk for 35 people" then it's a problem. Don't let that happen.