how to crossfade two AudioElements in OSMF?

I'd like to crossfade two AudioElements inside a SerialElement but I don't know where to start. Any cl开发者_StackOverflow社区ue?

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So far I've found that the only way is to put them in a parallel element. Have the 2nd audio element wrapped in a serial element along with a duration element.

Like so:

Parallel Element ->
    Audio Element
    Serial Element ->
         DurationElement
         Audio Element

You can then set up event listeners using their time and audio traits to perform a fade effect for each element.