Greg Sandoval reporting for CNET:
An Apple spokesman confirmed for CNET this evening a report by Symphonic Distribution, a digital music distributor, that iTunes would soon be extending the length of song samples from 30 seconds to 90 seconds for songs that are at least two-and-a-half minutes in length. Shorter songs would continue to offer the 30-second sample.
30-seconds was never quite enough time to make a purchasing decision. And, I suspect most iTunes users would often look elsewhere to hear a longer clip of songs they’re considering. But, 90-seconds sounds much more reasonable to me. It’s not the whole song, but is enough to give you an idea of whether or not you’ll enjoy it.