Ripping Audio from an SWF File

[drfsupercenter]

Well, I successfully converted an SWF to AVI using Swf2Avi, which makes each frame a BMP image, and then using VirtualDubMod to put the frames in an AVI. How do I get the audio from that SWF though? I know SWF Decompiler can do it, but it is not freeware, and the trial doesn't let you save the audio.