Hacking iTunes to allow half-star ratings might seem cool, but it can also cause problems. The Popjustice blog points out one of the potential flaws:
We've got a smart playlist which selects 8GB of ***** songs and chucks them onto our iPhone, as well as another that selects 3GB of the most recently added ***-and-above songs and puts those on the iPhone too. Every few weeks we have a clearout of stuff with one star. That has been fine. Now we can give things half a star it's all gone horribly wrong and everything's a mess.
While this methodology could be adapted to deal with a wider range of ratings, it does highlight the issues involved when you're trying to select the best bits of hundreds of gigabytes of music for a limited capacity player. Share your preferred solution to rating and managing your overflowing content in the comments.