What does FourPlay Studio use?
Computer (300mhz, 64mb ram)...Mic...Small Mixer...thats about it.
If you can line up your own beats, and record all the vocals at home, then you can get it professionally mixed&mastered somewhere else, and cut your studio hours by like 60-70%....but i wouldnt recommend mixing it at home, unless you have 6-8 months to devote to learning a mixing program.
Peace