Where Is the Airplay Icon (for audio) on my iPhone 4? - And Other Issues

Question

For the most part I'm pretty pleased with iOSv4.2 for both my iPads and iPhones. Folders, multitasking, all great improvements. But perhaps the most exciting new feature is "Airplay" from my iPad and, I wish, from my iPhone as well. To bad it's gimpy...
Never mind the fact that Airplay doesn't work with my original AppleTV - I think that's a raw deal, but hey, that's the way Apple rolls us into its version of the future. So ATV2 is already ordered and en-route.
I'll get to video and photos eventually, but for now I'm mostly concerned about sending music wirelessly from my iGizmos to speaker systems around the house. I have two Airport Express units, and those show up in Airplay on my iPad, so I know the system is working.
So here are the issues I'm having with Airplay:
1) I'm posting here because my biggest issue is that I do not see Airplay on my iPhone 4 updated to iOSv4.2. Even when using the iPod app on the iPhone, when I swipe to the controls in multitasking mode, there is no Airplay icon. It seems to me I should be able to send audio - either stored or streaming - from my iPhone to my Airports (as I can with my iPad), but I cannot. BTW, I DID see the Airplay icon briefly yesterday - when I had a bluetooth stereo headset activated, the Airplay icon appeared and gave me the choice of the headset or the iPhone. But I never did see an option to connect with my Airports.
2) When using Airplay from the iPad, I was only permitted to select ONE Airport device at a time. Huh? With Airplay in iTunes on my desktop, I have the option of sending the signal to as many devices as I want at one time. Is there some reason I cannot do that with my iOSv4.2? Seems to me they should operate in the same manner, why the oversight? Eventually I will need to connect multiple sound systems to one source.
3) As others have reported in this space, I am experiencing intermittent signal when listening to audio from my v4.2 enable iPad. It gets pretty annoying. I will continue to monitor these threads and see if I can get to the crux of the issue.
I recall reading that the release v4.2 was delayed somewhat in part because of "WiFi issues," and it would appear to me that those issues were not entirely resolved prior to the actual release. I'm glad they went ahead and released it, because the other features I've alluded to are a big improvement, but now that they've tempted me with these new possibilities, I expect it all to work well.
Are we taking bets on the release of iOSv4.2.2 ?
Thanks,
--PS

Answer 1

Mini Man, I'm glad to read you found a solution to your issue, but I don't know if your solution is going to be mine as well.
For starters, I do not have the new Apple TV - at least, not yet. I have ordered one, but it will not be delivered until some time next week (sneering glance at Steve & Co. for abandoning that platform rather than making it AirPlay compatible).
But that is not really my issue: my issue is that my two Airport Express units do NOT show up in the iPhone, though the DO show up on my iPad. This tells me they have been properly configured (both units have names, and are connected to the house network), so there must still be something missing from the equation.
And, judging from the response of a few others who have chimed in here, I think it's save to say that the experience is not altogether uncommon.
I'm surprised nobody has come back with a more direct solution to the common issue. I may have to call AppleCare someday this week...
--PS