If you really need music (or any audio fragment in general) on a page, you can convert the file to ogg. There are many convertors, e.g. . You can then upload the ogg-file to your Wikia and include the audio fragment into the page the same way you would include an image. Just make sure are free to use the audio samples.
You can find an example at w:c:elderscrolls:Dragon Shouts.