What is your computer speification, in particular the processor, graphics card/chipset the sound card Make/Model, please quote the make and models in full.
If the sound card is an external USB sound device does it playback audio correctly from other programs such as Windows Media Player?
Also, please respond fully to all questions posed to you!
In particular, about the specification of your computer. We are all fellow-users and cannot see your computer so must depend upon and work from the information you give us!