I visited certain sites and there was music.  How can we add music onto our profile page???

Right now, adding music to your page is something available to official artists only. We're gong to be adding a music player in the not too distant future so that all users can include music players in their profiles.

Until then, you might consider embedding a video (music video) or uploading your music to a free service like Houndbite.com and embedding their music player into a blog entry. Embeddable HTML code can be included by clicking "HTML view" within your blog entry.