```css
#music_container {
display: none;
}
```
This code will hide the entire music player container, including the player itself and any associated controls.
To hide only the player controls, you can use the following CSS code:
```css
#music_controls {
display: none;
}
```
This code will hide the play/pause, skip, and volume controls, but will leave the player itself visible.
To hide the player itself, you can use the following CSS code:
```css
#music_player {
display: none;
}
```
This code will hide the entire player, including the player controls.
You can add this CSS code to your MySpace page by going to the "Edit Profile" page, then clicking on the "Advanced CSS" tab. In the "Custom CSS" field, paste the CSS code and click "Save Changes".