Apple CEO Steve Jobs has no plan to allow iTunes customers to use portable digital-music players made by other companies.

Jobs told USA Today: "Our strategy is to support the number one MP3 player in the market".

Nor does Jobs plan to lower prices or dramatically change iTunes to meet the onslaught of the many other music download services coming to market.

"Quality keeps customers loyal. We're going to continue on our winning strategy," he added.

And Jobs is not concerned about the likes of Wal-Mart, who recently announced the launch of a music download service, Jobs said: "Wal-Mart's Web store did not set the world on fire. We'll see if it is competitive."