Merge commit 'f0eab98c4ef7449eb5a5ef659cd794e0003216b3' * commit 'f0eab98c4ef7449eb5a5ef659cd794e0003216b3': Instead of asserting, publish no tracks if an MP3Extractor is used on non-mp3 content.
Merge commit 'f0eab98c4ef7449eb5a5ef659cd794e0003216b3' * commit 'f0eab98c4ef7449eb5a5ef659cd794e0003216b3': Instead of asserting, publish no tracks if an MP3Extractor is used on non-mp3 content.