Here are my experiences with MyLink so far.
My ipod is a 160GB Classic with about 9,000 songs on it. I use itunes to manage it and it's running the latest Apple ROM. No matter what source I had selected the MyLink would sometimes switch to the ipod and begin indexing. This happened most often on the first start of the car in the morning. My ipod locked up a couple of days ago and needed a reset, after the reset it no longer does this! I'd suggest resetting your ipod to help weed out goofy behavior. For the Classic press and hold the center and menu buttons together until the Apple logo comes up.
It seems like it indexes in the background now. After being on a few minutes I can switch to ipod and do whatever. Playback will also continue from where it was at this point.
1 odd thing that remains - If I'm listening to ipod and shut the car off when I get back in it will switch to FM, then after a minute or so it switches back to ipod and the song continues. At this point I have to wait for it to finish indexing before switching tracks, etc. I doubt if this will change, it appears to be the way that MyLink is designed.
Otherwise it works great with ipod. My playlists work, album art shows up, shuffle works and the USB keeps it charged.
My experience so far is that the voice commands work really well. I'm using it regularly to make calls, change sources, change XM and radio channels and select music from ipod. Saying "USB" will switch to ipod, "XM" switches to XM, etc. "Play Album The Wall", "Play Artist Pink Floyd" all seem to work really well. I'm sure I've only scratched the surface of this capability.
My phone is a Samsung Galaxy S2. Pairing was easy and it works great. The voice dialing has been completely trouble free. "Call Mom" makes the call as expected. The JVC head unit I had in my last vehicle had all kinds of troubles with this phone. MyLink got rid of all the issues.
Works, but with limited functionality. I have a 32GB SD card in my phone with some music on it. It's a sub-set of what's on my ipod. Using the built in player I have to start the player from the phone. I downloaded Power Amp Player and there is a setting that will launch the player when bluetooth audio connects; it works great. Pause, rewind, fast forward, previous and next all work from the dash and steering wheel controls. Titles and album art are displayed. What's missing is any kind of folder or artist listing that can be used to move around. When I hit menu there is a setting for shuffle and a Folders sub-menu; if I click folders it says it's empty or not available. Unfortunately this really limits the usefulness. I'd be interested if anybody has a folder list.
I tried the voice command "Play Album" while listening to Bluetooth Audio for an album that is on my phone and my ipod. It switched to ipod and played the album.