I have synchronicity (and am in LOVE with it, i swap out movies to my phone every day cause i have a long commute and its great to not have to start over when i get a phone call, no more need for airplane mode while syncing!) and i only have one cord, that lives near my bed. and the Wi-Fi sync app has seemed a good candidate to fix the problem of having to remove that, but i would only get it if it worked with synchronicity. You say it needs backgrounder? that would be unfortunate, i try to avoid that app since iOS 4