Though Facebook has enjoyed dominance over MySpace in terms of traffic and number of users for over a year now, there’s one area in which MySpace still reigns supreme: music.

On Facebook, thanks to applications such as iLike and Last.fm, it’s possible to add songs to your profile, or, if you’re a musician, to your band’s fan page (though not many lower-level bands seem to know how to do this). And users typically share music by posting links to songs on other sites (especially in the form of YouTube videos) in their Facebook status updates.

But while millions of former everyday MySpacers have migrated to Facebook for their networking kicks, MySpace Music is still the go-to place for people to connect with bands big and small, allowing it to remain a true listening destination. While big graphics and sound may be unwelcome when it comes to bouncing around on your friends’ pages, flashy presentation is still an asset for artists. And, most important of all, as far as the industry is concerned, numbers of MySpace plays are still relevant as ever in determining a band’s popularity.

Take Kid Cudi. The refreshing and innovative, major-label-signed hip-hop artist from Cleveland has both a Facebook Fan Page (with a non-jibberish URL, no less!) and, of course, a MySpace page. Which page would you go to first to hear a Cudi cut? After scanning his page on Facebook for an indefinite period of time, your eyes may land on his Music tab, leading you to his five featured iLike songs. His nearly 80 million total plays on MySpace, however, show where the listening is done.

So what does that silent giant Facebook do? Earlier this week, it announced that it will be adding MP3s (courtesy of Lala, natch) to its gift store. Does anyone still give gifts? Too little. But it’s not too late.

Until Facebook allows bands to have integrated, immediate, embedded players on their sites — instead of relying on meager, bell-and-whistle players from outside music-streaming sites — MySpace will likely retain its musical advantage.

Or are we way off? What would you prescribe to Facebook to boost its music profile?