I recently purchased the new run of Fairbanks-Morse H10-44 diesel locomotive from Walthers. It has a Tsunami sound decoder. However, no specific settings for this decoder are found in Decoder Pro (version 3.8-r26527). I contacted Soundtraxx and learned that the decoder is a TSU-WW56.
With some digging around I found that this same decoder is used in the Walthers Proto 2000 U28B/U30B. I found that Decoder Pro does have a definition file for this decoder. I tried this setup and it appears to work fine with the H10-44 locomotive.
Information about the CV values for this decoder can be found at: http://www.walthers.com/page/walthers_u28b-u30b_cbq-cr-ln.pdf