I'm like the homemade ice-cream obsessive, I went through a big stage of making it a lot as I was considering retraining as a pastry chef/confectioner (don't ask!) so I must have made 500 batches at least.
There's generally 2 types of homemade ice-cream, philadelphia style and french-custard.
French Custard will normally give you a more creamy texture, whilst a philadelphia style is made without eggs so this means the ice cream is less rich, but it has a more intense flavour (generally). So you've technically made a philadelphia style one here, but I've not seen one which is just heavy cream like that though without another fat like coconut milk or peanut butter, which would worry me a bit! I guess they're assuming that the food processor whipping will take the place of the churn/emulsification. I suspect you'll have a texture issue when it's frozen and it might freeze quite hard (I'm really not trying to be a debbie downer!) Make sure you check it after 45 minutes and start breaking it up, there's some tips here -
http://www.davidlebovitz.com/2007/07/making-ice-crea-1/If you want to make Ice cream at home then the best book in the universe is by David Lebovitz -
http://www.amazon.com/exec/obidos/ASIN/1580088082/davidleboviswebsHis philadelphia chocolate peanut butter is to die for (do make the pnb mix ins!) as is the fresh mint choc chip.
He's got some recipes up on his site. Don't be scared by the french style, it's really easy as long as you don't have the temp up too high, and don't skip the strain step.
This recipe would be a good one to try with your food processor -
http://www.davidlebovitz.com/2008/09/quick-coconut-ice-cream-with-saf/I have a magi mix as well, I use it for bread/dough a lot and for grating things, and slicing things really finely, but I'd love to be more creative with it! It does get used most days for something though