least common subsequence matching in audio fingerprints to remove ads and intros from your podcasts

Vaguely working! Matching isn't very good, but two passes at 30% similarity and minimum 10 second spans has yielded good results for two inputs.

1. open audio-adblock.go and add the filenames of the two inputs
2. go run audio-adblock.go will read them in and start processing
3. data will be fingerprinted, and matching sections will be removed
4. outputs will be written to A.mp3 and B.mp3, as hardcoded in audio-adblock.go

• [ ] retain matched fingerprints in memory
• [ ] serialize fingerprints for storage
• [ ] serialize associated audio snippet for storage
• [ ] allow more than two inputs for fingerprinting, limit to one output
• [ ] add a halfhearted CLI
• [ ] switch to a multithreaded LAME encoder, or ditch LAME entirely