Hi,
I don't think anyone ever suggested that every movie and song was immoral and rendered its viewer/listener immoral. Sure, there are parts of the stream that aren't contaminated, but once you step in to swim, you're bound to come in contact with the foul pollution, which we all know exists.

This is why I would advise all Muslims to stay away from western music and movies as it will inevitably have a negative impact on their spiritual well-being.

It would be nice if we could somehow seperate and purify the waters, and in that way use these forms of art in a better method. Movies are very powerful forms of media and unfortunately, Muslims haven't seized them and made Islamic movies. Some efforts have been made ("The Message" and "Lion of the Desert" come to mind, as well as cartoon movies like "Al-Fatih" and "The Boy and the King") but more should be done in this area as it can also help in imparting the teachings of Islam to the youth in an attractive manner.

As for music, many Muslims listen to nasheeds, but the major thing in the Muslim world is the Qiraa'at (recitation) of the Qur'an which has developed into the biggest form of 'artistic' expression. I couldn't imagine living without the recitation of the Qur'an, which has both power in its sound and message, and I find no suitable substitution amongst western music. So the argument of music being a vital and great form of art that Muslims lack, is really ethnocentric.

Regards