From Engadget
Long before Apple was shoehorning the latest from U2 into your iTunes account, it was deleting songs originating from rival services. Tell us if this sounds familiar: You grabbed Lady Gaga's The Fame Monster from Amazon MP3 in 2009, threw it in your iTunes library, went to sync your 160GB iPod classic and got an error message saying you needed to restore the device's factory settings. According to The Wall Street Journal, upon restoring, non-iTunes music would disappear.
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Long before Apple was shoehorning the latest from U2 into your iTunes account, it was deleting songs originating from rival services. Tell us if this sounds familiar: You grabbed Lady Gaga's The Fame Monster from Amazon MP3 in 2009, threw it in your iTunes library, went to sync your 160GB iPod classic and got an error message saying you needed to restore the device's factory settings. According to The Wall Street Journal, upon restoring, non-iTunes music would disappear.
MORE