Want to do something with music, but have no musical talent? Or can you already make music, but do you just want to mess around with an easy way to make "remixes"?
(There's a wall of text after this, but don't worry - most of it is optional.)

MIDIRipping is the process of opening a MIDI someone else made in a DAW (such as FL Studio), and modifying it. Artists generally don't consider MIDIRips proper remixing (in fact, sites such as OCRemix immediately refuse any submission if they find out it's a MIDIRip), but it's a very easy way to "remix" tracks. With only a tiny bit of effort, you can make tracks sound completely different.

The obvious question is, of course, how does one make a MIDIRip?
The first step is to obtain a DAW. I uploaded FL Studio 7 to http://www.mediafire.com/?xmnyydqtydi . Then you find a MIDI you want to modify (you can find video game MIDIs at vgmusic.com or just google for MIDIs...maybe we can post good sites in this thread?) and open it in the DAW.

The simplest form of MIDIRipping is simply replacing the instruments.
Example (before): http://www.vgmusic.com/music/console/sega/master/Sonic_Bonus.mid
Example (after): http://www.tindeck.com/listen/xcum
After opening the MIDI you will see that it's split into different channels, one for each instrument. Right-click on one of the instruments (those square boxes before the notes), click Replace, and pick a random VST from the list (note: not all VSTs produce sound). The channel will now be played using the newly chosen VST. You can use the [<] and [>] buttons on the VST window to change the VST's preset - different presets can sound radically different (Sytrus has tons of different presets). Another way to replace instruments is by dragging a sample or soundfont from the browser to the channel.
You can play the track by clicking the [|>] button at the top or pressing space. Once you're done, you can save your MIDIRip and export it (file -> export -> to mp3 file).

Naturally, you can take it further and actually modify the track.
Example (before): http://www.vgmusic.com/music/console/nintendo/gameboy/bossbatt-V1.1.mid
Example (after): http://www.tindeck.com/listen/bbnh
Press F5 (or do view -> playlist) to open the playlist editor. You'll notice that you're at pattern 1 - it contains all information from the original MIDI file. Click in the grid at the top-left corner, where the time is at 0 and the pattern is 'Pattern 1'. (You can drag the newly placed pattern to make sure it's at the start.) Then click 'Pattern 2'.
You'll notice that the pattern sequencer is suddenly empty - you'll be making a new pattern now. Right-click a random instrument, and choose Insert -> [VST of your choice]. Then right-click the new instrument and choose Piano Roll. In this menu you can add, move and resize notes by clicking in the grid. Right-click to remove notes. You can just use the 'play' feature to preview your pattern; it will only play the pattern, not the entire song.
Once you think you have a nice pattern, you can put it wherever you want in the playlist. (In the example, I repeated the drum pattern (4 bars long) for the entire song.) To play the entire song, you can toggle between 'Pattern' and 'Song' right next to the play/stop/record buttons.

Naturally, you can go even further if you want, by manually taking parts of the MIDI rather than playing the entire MIDI and overlaying your own contributions.
Example (before): http://www.vgmusic.com/music/console/nintendo/gameboy/GQintro-V1.1.mid
Example (after): http://www.tindeck.com/listen/poit
If you go back to pattern 1, you'll see that it looks just like your own patterns, but a lot fuller. You can open the piano roll of a random instrument - and voila, there's the notes, ready to be copy and pasted into their own patterns. Split the various parts played into patterns, and you can choose when to play each part yourself, giving you full control over the track. You can even modify the original notes themselves, naturally.
You can also change the track's tempo by changing the number at the top. Do note that this only works if you don't play pattern 1 - the original MIDI contains an 'invisible note' that sets the tempo at the start of pattern 1.

I made a Tindeck account everybody can upload their MIDIRips to:
Username: BunbunmaruMIDIRips
Password: projects

I also uploaded two /bun/-related MIDIRips:
http://www.tindeck.com/listen/ntcg - 'Country Train' from Clannad
http://www.tindeck.com/listen/zpnu - 'Melancholy of a Troubled Girl' (Haruka Saigusa's theme) from Little Busters!

Now it's your turn. 'No talent' is no longer an excuse! Do something creative and let us hear the results!

This definitely interests me, but it will probably be a while before I have anything to share.

>>4

>I don't like this post so I'll just remove it

Sorry. I didn't mean to get anyone's hopes up. I just thought this thread definitely deserved a reply. I am actually interested, but I will not have the resources to play with this for a while. By a while, I mean indefinitely. I should have originally said, "it will be a long time before I have anything to share."

>>5
I think >>4 was removed because it only contained a sarcastic image reply. Images are discouraged on this board unless they contribute to the project.

>>6
Nope, images aren't discouraged; do as you please. It's just that our newest mod (笑) is a bit unfamiliar with the leniencies allotted this board. He has been informed so don't worry about any future instances.

As both a former MIDI sequencer (submitted quite a few to VGmusic) and remixer, I absolutely despise the suggestion. Far too many times have my stuff been stolen, have a few track patch changed, then resubmitted or posted elsewhere by some random bastard claiming full credit on their work. It's fine to use midis as a starting point for remixing, but their's just no artistic merit in doing crap like this.

>>8
I agree that stealing someone else's work and claiming it as your own is something you shouldn't do, but there's nothing wrong with just messing around with MIDIs, is there?