Hi,
I have developmented a DShow source filter to support DRM protected files(mp3 ,for instance), and maked the filter as preferred source filter for mp3 file. When call RenderFile(_T("MyMusic.mp3"), NULL), my source filter can be found. Now I have a doubt whether Media Player would use my source filter when play a mp3 file
Otherwise whether sound manager use DShow internally to play mp3 file when I choose a mp3 as a event ring
Thanks for any helps.

DShow on smartphone
Joaquin Raya