What is the law considering making a remix from another artists song?  Is there a time limit?  ( For example, can you take Jimmy Hendrix’s songs and remix them, but maybe not Beyonce’s from last year ? ) 

Also, semi-related… Do you use acapellas or is there a way to pull vocals from a track?  I read that the vocals are usually centered and therefore you cannot pan to a side like you could to isolate the drums per say.

To get a definite answer, ask Hypnotic or one of the staff members, but I think you can post songs that are REMIXED by you.

I once posted a remix I did of Sander Van Doorn and nothing was wrong.

No one can stop you, however, there are rules for selling said remix

Yes, you can remix anything you want, but you can't commercially release it without permission by the copyright owners (original author or the label).

And yes, the copyrights do expire after a while and the product becomes public domain. After that you can use it, modify it and sell it. The time after which a copyright expires differs in different country, so you'll have to check that yourself. Do a search for public domain music and you'll find plenty of it.

About the acapellas question: if you want to include vocals from another track, it's best to find a remix pack of it. Trying to cut them out of the tune is not the way to do it.

I started on a remix of the song "Volume 1" by Anjunabeats, not for commercial reasons of course. Getting the "vocal" from that song was difficult. In general, isolating vocals is very difficult to do, because it requires a ton of filtering, which is tricky to do, because you can end up cutting out frequencies where vocals might be present, yet they're clashing with other instruments at the same time. So far as I know, it's relatively easy to cut vocals out of track. It's a totally different thing to have only the vocals playing.

I've had an idea floating around where you take the track you plan to remix and turn it into a mono from a stereo, so you have two mono tracks instead of one left pan track and one right pan track. You take one of those two mono tracks and EQ it so you cut out the vocals. Then you invert the signal polarity of the other one so you, I think, will only hear the vocals of the other track. Then you can just export that track and go to your software and use a stereo simulator so the sounds once again become a stereo instead of a mono. I have yet to really try this out though.

As Hypnotic said, probably a remix pack is the easiest way to get vocals.

so where do i find a remix pack?

Originally posted by PsychoKilla666

so where do i find a remix pack?

remix packs are only available if the record lable releases the stems from the song, or if the acapella is released.

However there are alot of do-it-yourself (diy) acapellas where individuals have found ways to isolate the acapella.

One way, is to find the instrument, and then the original tune, load it into a program reverse the polarity, to where the music cancels itself out leaving you with just the acapella, with a few minor artifacts of the song sometimes.  However both files you use must be of the same bit-rate.  And a high one at that 192-320 kbpm.

There is one other way, but I can't think of it off the top of my head.