Ruling: Impermissible – except the duff – according to the vast majority of the Ummah. Please see:
Shaykh Nuh (May Allah allow us to benefit from his blessings) said:
So [for] those of Taqwa and Iman the ruling is clear…
However, due the difference that exists regarding the issue one should not go about condemning those who permit Music – in specific the 'Ulema who are the "heirs of the prophet's". At the same time one should understand the circumstances and contexts within which these 'ulema gave these verdicts. Shaykh Nuh out lines this in his audio.
The Essentials Of The Fiqh Of Commanding The Good And Forbidding The Evil
1. Commanding the good and forbidding the evil is one of the most important of Islamic duties. The Prophet (Allah bless him & give him peace) cautioned us, ““Command the right and forbid the wrong, or Allah will put the worst of you in charge of the best of you, and the best will supplicate Allah and be left unanswered.”
2. Scholars mention, however, that commanding the good and forbidding the evil is only obligatory if one thinks that the person would listen.
3. Otherwise, if one does not think they will listen, it is recommended.
4. However, if a greater harm or worsening of the situation is feared, then it would be better (or even obligatory, in some cases) not to say anything, because legally one choose the less harmful of two matters.
5. It would be an obligation, however, to hate the wrong in one’s heart.
6. With this, if it is ongoing in one’s presence (such as listening to unlawful talk) it would be obligatory to leave if even stopping it (such as by subtly changing the topic) is not possible. Similarly, if a sister is not properly covered, one cannot allow oneself to look at her uncovered hair or limbs. Similarly, if a brother is wearing very tight trousers, one cannot look at the (tightly-covered) area between his navel and knees.
7. Sayyidi Abd al-Ghani al-Nabulsi (Allah have mercy on him) cautions that the general Prophetic way in commanding the good and forbidding the evil is to do so in a discreet, non-specific manner, in order to preserve the honor and feelings of the one who is wrongdoing to the extent possible.
[From: Sharh al-Tariqa al-Muhammadiyya, Sayyidi Abd al-Ghani al-Nabulsi; Radd al-Muhtar, Allama Ibn Abidin; al-Hadhr wa’l Ibaha, Shaykh Khalil al-Nahlawi]
Blessings on the Prophet, his family, and his companions.