Starting with later versions of Windows, Microsoft added a feature called Exclusive Audio Mode.  If another program (or even Windows) requests Exclusive Audio Mode then other programs (like Sports Sounds Pro) are not granted access to the sound card buffer and it results in this error.  It is easy to correct. You must TURN OFF Exclusive Audio Mode.  Both in Windows Help and by searching Google you can find instructions on how to accomplish this.

Basically this is what you need to do.

1) Right-click the speaker icon in the notification area, which is located on the right side of the taskbar, and select Playback Devices.

2) After the Sound window appears, select Playback.

3) Next, select an entry in the list of device names, and click Properties.

4) After the Properties window appears, click Advanced.

5) On the screen that appears, there should be a box labeled "Exclusive Mode"  Make sure BOTH selection boxes under it are NOT CHECKED.

6) Click OK to exit the screen and then OK to exit the next higher screen.

7) Reboot your pc and your problem should be corrected.