Podcastur is a simple tool for removing music from radio recordings. It does this by assuming that the speech signal is handled very differently from the music signal in the recording and therefore have different frequency characteristics. This is not true for all radio recordings, but for the ones this was developed to handle it works like a charm.
Podcastur is developed in python using Django and Django-Q for work distribution. The files are stored in IBM object storage (S3 compatible).