omg, im late to an interesting thread
first off, just want to tell the guys that keep telling people to go back to a different platform to please stop commenting or reading these threads... these guys are looking for help not like some other threads that just troll (which would be different in that case)
for the .wav files, I remember hearing VLC is looking to build an WP8 app as well after they build an app for Windows 8, and they already have achieved their goal for funding, given that the core is vastly similar, I think there is a good chance that the WP8 app will appear shortly after the Windows 8 one. I think that will fix the .wav file problem. The company I work for just started switching to Cisco as well, but for some unknown upper management issue we're not getting that function =..= we still have to dial in to our phone to listen to VMs... I don't understand these people...
now to the op, I started watching WP since it's birth and didn't start using one until early last year with the Lumia 800. One thing about being an early adopter is you will run into limitations and issues, but what I've found (with myself anyways) is that I actually enjoy seeing the platform mature and gain new abilities through time, like when we get updates that gave us more features like flip to silence for example it made me felt good and happy like I've leveled up in an RPG
I don't know if this will make you feel any better, but seeing how quickly things improve in WP by Microsoft is really amusing and fun to me
I'm sure they will fix alot more things this year, if you don't mind living with the limitation for a bit, I think you will fall in love with the platform as I have
btw, I remember hearing someone from MS said them self that they did run out of time for WP8 so they had to scale some features back such as notification center, so we may see alot more things to toy with in March of so (pure speculation...)
now one odd thing that I did find that might indicate how things might be different in regards to sandboxing in the future for WP8, when Windows 8 first launched I started developing a media app, when I started it there was a limitation to apps that you can not traverse through non-known folders (such as My Documents) automatically by the app, for some reason some time last month this changed after an update and I could do it with my app with no issues... so I'm getting the feeling Microsoft is starting to recognize the need to change the behavior of how things are sandboxed, they may create an open section in memory to allow data sharing, again this is pure speculation
(still waiting for my wife to finish the logo for my app... so it's not out yet, hopefully I can throw it onto the app store later this month
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btw there "is" one separate volume control, not sure if people noticed, if you are in a call and you try to change the volume, that's actually a separate setting on mine (the regular one is 0/30 and the one for phone call is 0/10) from what I've tried, it does make the volume different, but I don't know if that control changes just the voice when on a phone call or does it change the notification sounds during the phone call as well.... (hmm... this paragraph is not really making much sense... I hope you understand what I'm trying to say)