Cablevision Systems has joined the iPad party, and not everyone is happy.
On Saturday, April 2, Cablevision Systems' free Optimum for iPad app, with access to 300 live TV channels--and more than 2,000 video-on-demand titles--became available through Apple's App Store.
Two days later, YES Network, the regional sports network home of the New York Yankees and New Jersey Nets, cried foul.
"Cablevision does not have the right to offer the YES Network in the manner it is doing so on the iPad, and it has been notified as such," the RSN said in a statement. Cablevision declined to comment.
That came after some programmers issued …