[Vista] Upmixing of stereo sound

[drsnuggles]

I use BSPlayer 1.37 in Windows Vista and it all works excellent like it should. There is however, one problem caused by Vista.

In Windows Vista, the support for hardware upmixing with DirectSound is removed. This means that everything with stereo sound will be played on the two front speakers, without using the rear speakers. Thus, also BSPlayer plays movies with stereo sound without using the rear speakers.

I would like to have 4.1 surround for everything, including music and movies with stereo sound. For Winamp there is a plugin available to upmix music. Is there a way to let BSPlayer upmix stereo sound to 4.1 or surround sound :?: I would really appreciate your answer.