This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
There were a handful of them. Two I remember are allofmp3 and something like mp3eagle. One of those introduced me to Muse around the time Black holes and Revelations came out.
Allofmp3, that was it! I downloaded the Muse albums too. :-)