How much mobile music is enough?

With the advent of the iTunes phone, analysts debate if there's room for more mobile phone/digital music hybrids. Nokia's N91, capable of storing roughly 1,000 songs, points to the potentially vast storage capacity for mobile music phones. However, a recent Solutions Research Group study found that the average user of high-capacity digital music devices stores only 375 songs. Given this, mobile music phones may not need to store as much music as some critics claim to be successful. Article