I only listen to jewish music now except for the occasional YouTube links I get from friends as “must watch!”s.
But I did it very very slowly… I was inspired to stop listening when I was in camp one summer, and started then. I first started off by committing to not buy any new not jewish songs but allowed myself to listen to my old stuff (I ddnt delete anything off my iPod yet)… Then I stopped listening to the radio (I discovered radio Hidabroot at this point)…then whenever I connected my iPod to my computer I weeded out the worse songs I had on it. Every time I connected it i told myself ill get rid of at least 8 songs and I usually exceeded that :). Then the summer before seminary I got rid of all my not jewish music (except for my Disney songs which are still there actually) and told myself if I still want them after sem, I still have the songs on my computer and I can redownload them after sem… Still going strong 🙂 I listen to some stuff occasionally-like if my friends recommend stuff or if its playing in their care I don’t ask them to turn it off