>_<
Thats a lot to be recording. How much money are we talking here? Well, regardless, I'll give my suggestions for doing it on the cheap, and then a few tricks to do stuff on the
really cheap.
I'm not familar with using a multitrack as the recording medium - I always used a computer. To use your computer you should get a a good, simple, high quality audio interface, like the EMU 0404? or the M-Audio Audiophile 2496 both of which will cost you less than US$100.? Of course, this limits you to recording to the room where your computer is, which brings me to my next point.
How is ambient noise in your house? Assuming that you will be recording in your house, that is. For example, my bedroom is right near the front of the house, so I always have some car noises - even fairly late at night. There is also my computer, with its whirling fans. Sometimes the kids next door run around as well. Now, for some microphones, this isn't an issue. For others it is. For a good condeser, it will pick up everything - even noises you didn't know where there. A dynamic microphone won't pick up all that background noise, but it isn't as sensitive - but if you put it right up close to whatever you are recording, its fine.
Another consideration is power. A condesor mic needs Phantom power - called so because its transfered along the signal cable. So if you want to use a mixer, or pre-amp, or whatever to supply the power. This isn't too much of an issue, because you should probably get a preamp or a small mixer so you can actually plug your microphone's XLR cable into something.
Anyways, since you want to record a lot of things, I reccomend the Shure SM57 as a microphone. Its dynamic, so you don't have to worry about ambient sounds sneaking into the recording, it is rugged as all hell, versatile (even though its a instrument mic it can do vocals just fine, believe me), and relatively cheap for a pro microphone. Less than US$150, though I find that these things are so prevalent one can eaisily find a store that is having a sale, and pick it up for US$100 or so. If you have little ambient noise in your recording enviroment, you can grab a condensor, which has the advantage of being able to record more than one thing at a time. I don't have too much experience with condensors, so I shan't make a reccomendation for them. I've micced up pianos, acoustic guitars, and electric amps with the 57, and its all worked great. Not sure about drums, though - I think you would need a condesor for that, or lots of dynamics, up near all the drums... hmmmmmm. The condensor is probably easier, but just keep in mind the ambient noise - its not too bad, especially with noise gates and all that jazz, but just try to make sure you record fairly loud, so the noise is almost unnoticable.
Now the SM57, or any pro microphone, uses XLR as a connector, so you are going to need something to plug it into. If you plan on getting more microphones later, grab a mixer - cheap, small ones can be had for under US$75. If on the other only using one microphone ever, get a preamp - it will give a wee bit more quality for the price, and gives you some more control over the sound. A cheap tube preamp should add warmth to your recordings, and should be a wee bit cheaper than a mixer.
Lets do some sums. I'm pulling the prices from Zzounds.com, which is where the links go. Not that I'm saying you should buy from there - they just have prices fairly cheap.
Audio interface -
EMU0404 - $100
Microphone -
SM57 - $100
Mixer -
Berhinger UB802 - $45
$245. not bad for a fairly good setup.
But if you don't have that kind of money, and need to go really ghetto, here's how:
For vocals, use a computer headset mircophone - you know, the type you would use to talk on skype. you can get suprisingly good results with one of these - its the only microphone I use for mystuff, but then, I don't sing - I only record my voice so I can vocode it. ^_^
Any good Keyboard will have a signal out.? So grab a 1/4" (thats 7mm for you people from civilised parts of the world) cable, and a 1/4" to 1/8" (again, 3.5mm) converter, and plug it straight into your computer.? Ideally, you should use a DI box to balence the signal, but we are being ghetto.? In fact, this applies to any instrument with a 1/4" output - acoustic guitars with internal mics, electric guitars, whatever.? You might also have issues because the signal from the guitar will be mono, whereas you computer is probably expecting stereo, but again, ghetto.
NFI for horns or drums.
I hope this OMG-I-Didn't-realise-it-would-be-so-large post helps. Good luck!
EDIT: I fogot all about USB microphones! I've never used them, but folks who have inform me they work just fine. Simply plug 'e, in, and away you go... well, you might have to install some software, but apart from that, all good. So you could save yourself the soundcard and a mixer. Nice. the Microphone will probably be a bit more expensive then the 57, but you shoudl still be ahead. You might also need a huge ass USB cable, but again, you should still be ahead.