Here is something you can test. Can you connect the iFly 740, 720 or tablet to the Avidyne WiFi. If so, check to make sure you are seeing an IP Address in the IP Settings or on your tablet.
Then, open iFly GPS and touch Menu, About, Connected Devices. Touch the Select Wireless Device option an make your way through the list of support devices, pausing for about 30 seconds to 1 minute for each. If you see a list of data pop into the connection window and you see the Heartbeats incrementing, it may very well begin pulling in data from ADS-B. We've confirmed this as well with Lynx, it uses the FreeFlight option.
Most of these devices use a common port and protocol, it's just a matter of determining that port and then confirming the data flow. If anybody with a Avidyne can test this, it would be helpful. Feel free to contact me for assistance, Shane x804.