I have never heard of such a religion; mind giving a name?
For me it is just the opposite. If anything, I find my way to God through music. Without music life would be so dull.
My parents are religious Muslims and in Islam, Music is considered as a sin. This is based on how music influences someone and also how they believe that Satan's favorite noises is Music so they stay away from it. It mentions it in the Quran and also other Islamic books from scholars but there are some people that don't simiply follow the rule.
hmmm. Not allowed to listen/play music but allowed to use the internet? Riiiiiighhhhhttttttttt.
A Dutch fundamentalist Christian party is bang against TV (being "Satan's puppetshow"), but all for Internet, even has it's own website (which is closed on Sundays, of course).
Moreover, perhaps Ladymia isn't allowed Internet (or even a computer) at where she lives, but this doesn't mean she doesn't have access to the Internet (such as on school, at work, at a friend's place, etc.)
Lastly, religious rules are not always exactly logical, or do not pertain to everybody the same way (such as "these rules are for you, but not for me if nobody watches!")