Is the Apple iPod going to last or burn out like the Apple Macintosh?

Today the Apple iPod is leading the market in the portable music player industry, having sold around 15 million iPods since they were released. But some people are now saying like the Apple Macintosh once an industry leader the iPod will also become a memory.
Looking to the near future at the main competition for the Apple iPod are the new age mobile phones. Not only do they have the normal features of a mobile phone but they