LB- My understanding is that while technically all music should be forbidden year round, the poskim today allow it since most people are not capable of never listening to music plus listening to Jewish music can bring people to Dveykus (closeness) to Hashem. I believe Rav Moshe Feinstein may have a teshuva to this effect.
My understanding also is that the reason we don’t listen to music during the 3 weeks is because we really aren’t supposed to listen to music year round, but we are not holding by that, but at least during the 3 weeks, we shouldn’t listen to music.
Personally, I have a hard time not listening to music even during the 3 weeks and sefira, so I asked a sheilah and I was told that I am allowed to. I do try to avoid it during the 9 days at least if I can. I also try to stick to Acapella. I think there are Rabbanim who differentiate between acapella and regular music and there are Rabbanim who differentiate between live music and not-live music.
But, as Geordie said, you should ask your own sheilah to someone who knows you.