ROKR: What's the point?

Okay, Motorola finally revealed the ROKR to the public after months of speculation.Now here's the question is it worth it? The ROKR costs $250 and can hold 100 songs. For the same price, I can get a 4GB iPod nano (1,000 songs),6GB iPod mini (1,500 songs), or go the extra mile and get a $300 iPod with color (5,000 songs). Most people already have a phone anyways and there's not much demand from the average joe for a phone that plays music.Honestly, I don't see a reason why i should bother buying it. There's also the Sony Ericsson Walkman phone for $500 that new Nokia N91 which is pretty expensive. But who's going to spend the extra dough on these devices. I mean we've seen phone-insert portable entertainment device here crossovers,*cough NGage,cough* and they've never really gone mainstream. So what is Apple really achieving here?