> AFAIR there are no external classes anymore, since they got integrated.

I have still in SYS:Classes/Multimedia:

- digibooster3.demuxer 51.1 (21.02.14) © 2014 Grzegorz Kraszewski
- flac.decoder 51.2 (05.06.13) © 2012-2013 Grzegorz Kraszewski
- flac.demuxer 51.2 (12.06.13) © 2012-2013 Grzegorz Kraszewski
- frmaudio.filter 51.1 (13.04.07) (c) 2007 Grzegorz Kraszewski
- metaplayer.filter 51.1 (31.08.07) (c) 2007 Grzegorz Kraszewski

Are these classes obsolete?