Automatic Audio Editing

We want a tool that can be run on Linux that will take an audio file in .mp3 format and automatically filter out uses of profane words, such as F**K or S**T, etc. The features of the tool: 1. The tool should allow entering a list of the words that should be filtered out. 2. The tool should be runnable from the command line without human intervention. In other words it should be runnable as a batch process. 3. When a "bad word" is found in the audio the program should give the option of replacing the word with a sound (beep or bell, an alternate word, etc.). The sound choice should be read from another .mp3 file so that any sound could be utilized. 4. Alternatively it should be an option to remove the "bad word" and simply reduce the length of the .mp3 by the duration of the word.