The general concept behind what it known as a "remix" has existed a longer time than a lot of people realize. It has Jamaican origins, when producers such as Lee "Scratch" Perry and King Tubby begin to produce dub versions of tracks to put on the B side of 45s in the latter 1960's. This was created with a different sound than the original music when effects were added such as spring reverb, delayed tape, flanging and other techniques, with removing and moving the individual parts around.
With a remix, you can alter the style, feeling or actually the emotional sound of the track when sections and melodies are reharmonized, including extra elements. Even though a remixer is built on the existing music that is already there, there aren't any type of restrictions at all. You have the freedom to use that foundation, move it around, and create something great!
Take the track apart. With the materials that you will have to work with, do the majority of the slicing and trimming up front. This can be done in an audio editing suite, especially in the case of cutting loops (refer to MP3 Remix Software page for links).
To get a hot new disco style beat you can use Sony ACID or Ableton. Simply cut in some key drops, some hits, and some fills out of a track. Also be sure to use some filters, compression and Equalizing. By doing that you will isolate the choice melodies and passages. This will ensue that you get he base foundation of the remix set. Finally by making sure that you model a wicked electric baseline along with some killer synthetic hooks you can produce a crazy banger that will be popular during the peak hours. My only advice is to make sure you do it right and keep the vibe rich.
When you are happy with the fresh, new remix of your favorite song that you created, the next step is to export it. You will need to save it as a WAV or AIFF file. Then, to make sure that the volume is at a normal level and will reach the highest volume, you will need to load the file into your editing software and normalize it to 99%.
Delay, chorus, flanger, reverb, frequency modulation and timestretching. These are only some of the exciting effects available in your DAW/audio editing software. You'll find a a wide variety of special effects you can try to make your recording just exactly as you want. You can edit every part separately for ultimate sound customization!
Have your remix distributed through the Internet. This is done by converting it to MP3 format using an MP3 converter software like Lame. Then you can share it and spread the word! Or music, in this case. A good start would be to add it to your profile on Global AMP.
To find out more about making remixes post a question on the AMP Music Forum!