DMG + Flash cart(I use the EMS 64m carts and I've also heavily modified my DMGs)
Pro-Sound mod in an easy first mod to do to your Game Boy, its pretty much essential if you want to record because it reduces unwanted noise and really improves the sound of the recording.
(http://store.kitsch-bent.com/ is where I get my flash carts and I highly recommend Kitsch-bent for their amazing customer service)
Also I would recomend the emulator BGB and you might want to invest some type of controller so you don't have to constantly be using your computer's keyboard.
And also check out this software - http://www.mediafire.com/surfacedragon
I like to write songs with LSDJ using my computer(with BGB and a wired xbox360 controller) because my computer has a large screen that's easy to read and the xbox360 controller is comfortable to navigate LSDJ with. Then I take the LSDJ save file containing the song(or whatever I want to record) and flash it to one of my 64m cartridges so I can record using real hardware.
If you ever need advice/help or custom/modified software don't hesitate to ask, I am a busy person but I'll do my best to help you out.
Last edited by SurfaceDragon (Sep 16, 2011 2:10 am)