I wouldn't worry about A2DP, then. Just a way to have your music collection available to play through your receiver. Be it by DLNA server to the receiver, or another device. Then find an app for the iPod that will allow it to control what's being played.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs