I've been searhing for ages for a program that can create acapellas and instrumentals from MP3 or Wav files. Any ideas?
Huh.. That would be extremely complicated audio filtering and I doubt that perfect results are very hard to yield. In MP3 and WAV files differect voices (vocals, intruments) are not separated to any tracks, so the only chance is to eliminate certain frequencies.
It can't be done in a perfect way, because it even cannot be defined in a perfect way ! What if some instruments are sung ? (Pow Wow, Bobby Mc----? , imitations...), and what about synthetic voices ? And do you keep handclaps ? What about processed voices ?