The Interactive Audio Special Interest Group has recently revealed a preview a draft of a new open interactive audio file format called iXMF, that has been devised for interactive audio content.
Sony Computer Entertainment Europe have backed the format saying "We're supporting iXMF in our new audio tools so sound designers can take advantage of the incredible audio processing power of the PS3."
To quote: iXMF is the first open file format to be devised for interactive audio content. It combines MIDI and audio data with scripting logic that defines playback behaviours, encompassing a huge amount features of modern audio engine environments in a non-proprietary format.
It is hoped that iXMF will enhance data exchange between authoring applications and let game audio engineers use the same tools as their TV and film brethren.