TV bosses concerned by Zune ads-funded content ideas

There are concerns in TV land, apparently, regarding one of the plans being developed by Microsoft relating to its new iPod/iTunes type venture Zune. Word has it Microsoft are planning on offering a service where people will be able to download free video content that will come with advertising glued to it. The plan there is to compete with iTunes' growing video and TV content service by offering the same content for free rather than on a pay-as-you-go basis (though at the same time generating an ad income to compensate the content owners). However, according to the New York Post, TV bosses aren't happy at the thought of a new platform competing with their own networks for advertising spend, even if they ultimately get a sizable portion of any ads carried on Zune. If that is the case, then Microsoft might find it hard to persuade the TV content owners (many of whom own both content and networks) to licence their shows for the ad funded service.