No problem! I think I should probably make this change when I drop support for iOS4, since AudioSessionManager also has some switches for iOS4/iOS5 stuff which could be nicely simplified without iOS4 support at the same time that AVAudioSession will simplify the gnarly old AudioSession stuff, so everything in there can be looked at as a whole and the overall class will be much shorter. I am considering dropping iOS4 sooner rather than later based on these charts and others which seem to show iOS4 usage in the 5% range or less:
http://david-smith.org/iosversionstats/
But I’ve always tried to keep the backward OS compatibility for a pretty long time since I’m not crazy about the phenomenon of OS compatibility driving new device purchases from an environmental perspective. But at this point iOS4 usage is starting to look like the margin of error, so it’s probably time.