I used the HTC "Connected Media" app available from the AppStore when you switch your marketplace settings with WPHTweaks to HTC. Works fine for playing videos captured on the camera directly to my xbox360 over wifi.
This 7.8 ROM image works really well. Thanks. I removed the flashlight app and swapped for FlashLight-X from the Store and tossed the Nokia Drive 2.x app for the Nokia "Drive_v3.1.0.3206" from a certain chinese website which works a lot better. In that app, I edited the WMAppMainfest.xml file to rename the Title back to "Nokia Drive" cause the Chinese site put in Chinese unicode characters. The app claims to need root access but it works fine if you don't enable it.
Today I just got an updated app from marketplace for "high fidelity position" and "Network Profile". Not sure what they changed.
Those tweaks sound great. Did you recreate a new ROM or did you just adjust those things after you flashed? If you happen to have a newer ROM with these changes I'd be interested in it if you don't mind sharing.