How to retrieve stats about the iTunes Match account

You may not be able to get complete matches, but here's what I have been doing in the cases where one or two tracks don't match.

1. Select the item(s) to attempt to re-match.
2. Right-click on them, and select "Create AAC Version"
3. When this is complete, hit alt-backspace, and choose to remove both the original and the iCloud version. Also choose to delete the items from disk.
4. Go to the "Store" -> "Update iTunes Match" menu item.

Note that this will keep the play counts, etc on your tracks. It may not succeed on every track, and sometimes repeating the process picks up another track.

Occasionally, I'll get a "Removed" icon there after doing this: just right-click and choose "Add to iCloud" on these.

iTunes will not read the tags that MP3Gain uses to set the volume. iTunes stores Sound Check volume information in the iTunNORM tag.

If all of your music is in MP3 format, you could try qNormal.

However, if you've enabled iTunes Match and have a mix of MP3 and AAC files, you could try the commercial product beaTunes. It has a Windows version.

Both applications claim to calculate the appropriate volume using the open source ReplayGain algorithm that MP3Gain also uses.