i think that rain is right though on that if the music sounds the same as secular music that we may deem bad, then what really seperates that music from christian music that relies on that similar playing style?
we should discern both lyrics and musical content, because musical content itself speaks its own tongue, it communicates messages we may not understand at first but they get absorbed either way, thats why many non-christian songs and such are simply music, devoid of praise and subtly suggesting one thing.
people understand that music speaks out, but how much do you realize about how it speaks out? I could sing about Jesus and love with the harshest sounds and some might still consider it christian, although the sound itself plays one of the most important parts. I remember listening to a man who came allegedly from the illuminati and was born again and was speaking out against christian rock because satanic music has its power in the music, whereas christian music has its power in lyrics; however this does not mean all instrumental play is suggestive in negative ways like the following
example:
https://www.youtube.com/watch?v=iVpbK6cn8sA
from 0:28-0:32, notice how the guitar conveys the message NOT I BUT CHRIST?
also television and movies themselves are not worth it, it causes tv coma, drains energy, and robs you of imagination and theres way too much secular stuff that is just bad, not worth it, and you lose money for cable service, too much hassle, spend your money on good organic food instead!