Yup. I use the HiFiBerry DAC+ in the Audio part of the webconf. Once I got the MCP23017 based encoders working audio and midi tests play fine.
The Sainsmart is quite a bit cheaper than the HiFiBerry family but it doesn't give you the breakout header so I had to solder on a double row pin header to the top of the board:
If you look below the 40 pin cable (old IDE cable) you can see the solder joints joining the double row 40pin header to the to the DAC.