inherit from dmusic1 and dmusic2 version. And always use dmusic8
versions when available.
- really stupid implementation of IDirectMusicLoader8::GetObject when
IDirectMusicScript wanted
- really fix the refcount problem found by Rok
- implemented fake midi & performance channels
- implemented some IDirectMusic*8* functions where IDirectMusic*
equivalent exists
- IDirectMusic*8 interfaces can now be obtained from IDirectMusic
interfaces (QueryInterface...)
- channel-related performance functions are kinda implemented now