Audio Files with Sony Bluray BDP-S370

[Zbase1]

I am trying to get the Twonky server running on WHS to serve audio files to a Sony BDP-S370 Bluray player. I have successfully served video files and photos but can not see audio files. I have tried several file formats but suspect another issue. The server status screen indicates no music tracks but does indicate photo and video tracks. I am currently using the trial version until I can get the music tracks working. Any suggestions??