Napster has unveiled plans to lauch a portable music service with a US$30 million ad campaign aimed directly at Apple’s iPod, reports Reuters. “Napster’s promotion includes a Super Bowl television spot urging fans to compare the costs of spending $10,000 to buy and transfer 10,000 songs from Apple’s iTunes store to an iPod, with the $15-per-month fee to carry songs from a catalog of over a million tracks on Napster-compatible players.”