The bugs seem to be somewhere in the Delfina software. With the latest libraries and careful setup, it might be worth a try. Worst case, you could sell the Delfina if it didn't work out.
I also own a Delfina Lite (Zorro card), with the correct library and some tinkering, it's good for 128k mp3 streaming for days on end. Higher bitrates still cause eventual problems, but that may not be the case using the Flipper with recent libraries (which don't work with the old Zorro cards).
This is one of the reasons why I am being so careful and in asking, being so inquisitive (hope I'm not being too overly demanding of you all)
http://eab.abime.net/showthread.php?t=57365
I believe that issue involves a simple hardware fix, and is only a problem with certain Blizzard boards. I doubt you'd have the same problem in your A4000. But you're right - more often than not, setting up Amiga hardware takes some patience and involves headache, I like to down a few shots of the Glenlivet to ease me into the process.. :-o