What is the ruling on opening an internet café, with the ability to block pornographic websites, but without the ability to prevent songs or their copying for security reasons?

The questioner is encouraged to remove objectionable websites from his cafe and is urged to open an internet cafe free from lewd sites and forbidden songs, so that people may benefit and draw closer to good, thereby earning the reward of one who initiates a good practice. He is thanked for programming purposeful Islamic songs instead of immoral ones, because forbidden songs are objectionable and their spread corrupts the youth; they are among the greatest causes for the spread of indecency, and fall under the threat of Allah’s saying: "Indeed, those who like that indecency should be spread among those who have believed will have a painful punishment in this world and the Hereafter."