Manually manage your music on your iPhone

Yes this provides for doing so which I just confirmed.

What do you mean by... allowing you to plug into another computer and play your music? Are you saying you can download the songs on the phone to another computer?

You should be able to as long as it's the same OS system. You can't run a OSX formatted ipod or iphone on a windows PC version of itunes and vice versa. But as long as you've selected the options to manually manage music and to manually sync the phone you should be able to plug your iphone into someone elses computer and play your mp3s throught their itunes.

Of course I haven't tried this with the new update on iphone but I do know that it worked with my iPod nano.

Does that mean that at work, you can't see your songs (that are on iphone) in itunes, and you cant double click (in itunes) on songs that reside on your iphone so that these songs would play through your work computer speakers?

Yes, agreed, you can see the songs, but they are grayed out. Is that still the case when you connect to a different/work computer? (I'd love to try here at work, but running Win2000, so I can't even install iTunes over 7.3.x 😟

I've upgraded both of my home computers to the new version of iTunes (7.6), and I can now add music from either without completely replacing what's on the iPhone. I have my phone synced with my main desktop machine, but with "manually manage music" checked on both machines. I then plugged it in to my laptop. The music library now shows as black, not grey, and I can play the iPhone music through iTunes on the laptop (couldn't do that before...). I tested by dragging and dropping a single track from the laptop music library onto the iPhone. It transferred and played without incident. It works fine for me. I think the key is that the capability is in iTunes, not in the iPhone. You need iTunes 7.6 for this to work.

Nope- no message... I just plugged the phone in, saw the "manually manage music" option, checked that, hit "apply" and was off and running. I may have hit "sync" in there somewhere (mainly to update my podcasts), but I'm not sure about that.

Can anyone else reproduce these results? The error message I am getting when I try to plug my iPhone into a 2nd computer is pretty specific.

The dialog box that pops up when I plug in my iPhone to a 2nd machine, check "Manually manage music and videos" and hit apply reads:

"The iPhone [name here] is synced with another iTunes library. Do you want to erase this iPhone and sync with this iTunes library?"

and below it "An iPhone can be synced with only one iTunes library at a time. Erasing and syncing replaces the contents of this iPhone with the contents of this iTunes library."

- and there's a "Cancel" and an "Erase and Sync" button.