Hope it helps.There's a DPS AVI codec available that creates a virtual AVI file that contains audio (if any) and a pointer file to your original .dps file.
Most other programs will then be able to read the resulting .avi, which will still point to the original .dps file. Some apps work better with it than others. For instance, Premiere CS3 doesn't like the DPS AVI codec much, but other programs work with it fine.
If you go to the Harris Premiere website and register (it's free), you should be able to find it by doing a search. The Harris Premiere site is here:
You have to download and install both the AVI Codec and the DPS software player. One installs the direct show filter for playback, the other the codec. They also have to be installed in a certain order and this should be spelled out somewhere in one of the files that you unzip after the download.
Once it's installed, you should be able to play .dps files with Windows Media Player directly, and be able to export and render to DPS AVI files