I have a folder of nearly identical .MP3s, but each with a different voiceover mixed in. I'm trying to dump the tracks without the voiceovers.
I've tried aligning two of them to the nearest sample, inverting and then mixing. This leaves almost nothing except the voice, but I'm not sure where to go from there.
I think they all would have been recorded on top of the same original backing, but due to mp3 compression I'm not feeling very optimistic. I'm wondering if by having lots of tracks I could overcome this.
EDIT, more information: They're from an old PC game which I own, and I would use it for a personal nostalgic soundtrack. I don't think there was ever any licensed versions of the soundtrack, or any means to politely request the clean files.