Again, as I mentioned in a similar thread last year - the Delfina Flipper is not perfect, I had many problems with getting mine to play ball with my A1200T (yes, I tried connecting it to the clockports on the mobo, Z4 board, and the Highway's clockport - which was the ONLY one I got any sort of luck with).
Although the card has onboard DSP, the MHI drivers are extremely buggy (and now no longer developed) for MP3 players.
See this old thread and
this one too. (Also
this one, as it deals with the bugs in DelfinaMPEG.device and it's MHI driver status)
If you're looking to work more from AHI rather than trying for getting the MHI drivers to work without locking up your system, then the Delfina is still probably your best bet for it's price and availability.
On the upside, I think I remember somewhere hearing that someone had 'unofficially' patched DelfinaMPEG.device for the older Delfina cards which has been rumored to work with the Flipper edition - however as newer versions of DelfinaMPEG.device are patched for usage on Highway/Algor clockports, this might possibly break the possibility of getting the driver to play ball if connected to the clockports on those cards. I'm not entirely sure about that though as I gave up on getting mine to work long ago and have since retired my A1200T.