That would be awesome.
But just to be picky, OGG is mostly used for music in BL, WAV is used for sounds.
But you could use OGG's as sound as well, if i remember it correctly.
PS: To get it work, wouldn't it just to add a event that activates at the same time as the 'chase' event?
NinjaEdit: God, i'm just plain bad at english sometimes, fixed the grammar.