If you can't edit the graph created by DVBDream and can't find the MS codec on your PC, there are a couple of other options:
- install the latest Microsoft MPEG-1/DD Audio Decoder - it will override the former if any. I think, DVBDream can't change the graph because it can't find that codec in your system, so the graph gets broken;
- Also, find a folder or file where DVBDream stores its internally created Graphs description - clean it up. If you can't find one, DVBDream forum may help, but they seldom answer to posts. There are other known PC Sat Tuner forums found on the web, where such posts are answered.
AND / OR
- uninstall DVBDream, delete all its Prefs files and folders from everywhere you can find, cleanup the Registry using known cleanup tools, restart the PC and install the latest DVBDream Beta.
See if it'll fix the issue. You can always edit DVBDream's
codecs.ini file later to prevent it using the newly installed MS codec, but it may work just fine via DVBDream UI after the cleanup and reinstall.