Mediaplayer in Delphi 5 can′t record wav files !?

Hello,
the mediaplayer in Delphi 5 cant record wav files, not even with the update
pack. In Delphi 4, I could set filename='', devicetype=dtwaveaudio, then do
an .open, .startrecording,.stop,filename='dummy.wav',.save . This doesnt
work any more in Delphi 5, tmediaplayer wants a filename, not an empty
string.

Greetings,
Alex