As of yesterday, Apple says, iPhone 3G users can now preview and purchase the entire iTunes Store music catalog on their iPhone 3G over their 3G network, just as they do with Wi-Fi, for the same price.

Apple also announced that Universal Music Group, Sony BMG, Warner Music Group and EMI, and  thousands of independent labels, have upgraded their titles to iTunes Plus, Apple’s DRM-free format with higher-quality 256 kbps AAC encoding.

Apple says the iTunes Store already has 8 million of its 10 million songs in Apple’s DRM-free format and will offer the remaining 2 million songs in the format by the end of March.

As of April, based on what the music labels charge Apple, songs on iTunes will be available at $0.69, $0.99 and $1.29. Most albums still be priced at $9.99, Apple says.

iTunes is offering customers a one-click option to upgrade their entire library of previously purchased songs to the iTunes Plus format for just 30 cents per song or 30 percent of the album price.

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category: Breaking News