I've had a great experience thus far... here's what I've noticed, maybe it'll clear up some confusion:
It matched 850/1000 songs in my library.
When enabling iTunes Match on my iPhone, it didn't wipe my entire library on my iPhone... instead, it put little download-clouds next to songs that were in my iTunes Match Cloud but not on my iPhone.
Tapping to play the songs, or tapping the little cloud, both download the song onto your device. When you tap to play the song, it'll start playing it while it's downloading, almost like it's streaming, but it is still just downloading the whole song - and it stays there on your iPhone/iPod Touch/etc. There's no pure "streaming" that I can see.
Deleting "matched" songs goes like this:
- It gives you the "are you sure you want to delete it" like it always does. But now there is a check-box that asks if you want to delete the song from the cloud as well. This is how you can fully remove a song from everything/everywhere.
- I always choose to "keep file" when I delete music. What I noticed is that when I re download the newer 256k version, it does so, and it also still keeps my old song in the same exact location/folder as before.
Example: I deleted Bitter Sweet Symphony, which was 128k. I chose to "keep file." After downloading the newer version, I went to the folder's location in my iTunes Music folder, and there were two files: the older, 128k mp3 version, and the newer 256k AAC version. My iTunes library simply just ignores the 128k mp3 version.
The the same exact process applies to your iDevices. Deleting a matched song will leave it there as a greyed out option with a cloud, and you can re download the 256k version. (in the case of the iDevices, I believe it actually deletes the older version, unlike your computer).
- What I noticed is that there is no automatic syncing when it comes to this process of "upgrading" your music. Upgrading a file on my computer to 256k didn't change my iPhone's file. But, deleting the iPhone's file and redownloading it on my iPhone will give me the newer version (obviously, as I stated before).
As stated many times before, metadata isn't changed at all. All my play counts, titles, artists, messed-up names and what not, all stayed the exact same - upgrading to the new 256k versions or not.
This is obviously a pain if you want the upgraded songs on your iDevice... So what I'm wondering is:
If I turn off iTunes Match on my iPhone, upgrade my entire library on my computer to the way I want it to be (upgrading the lower bit rate songs to the newer 256k versions), and then sync my iPhone to my computer... and finally just reenable iTunes Match after I've synced it, I should have all of the newer 256k versions on my iPhone, correct?
That seems like the best way to do it... because it's tough to tell what's been matched and what the bit rate of songs are on the iDevices - and even then, doing it 1 by 1 would be a pain.