I recently activated iTunes Match for my music collection. Before that I had regained volume of all tracks to a quite low level. I use MP3Gain on windows with the default setting of "89".
On my PC/iTunes and on my iPhone I activated "sound check". iTunes has calculated the value for sound check. And it seems that the songs are level. However -- most of the songs on my PC are not yet updated from the cloud, they are still the originals. Maybe this is the reason why they are level.
When i play music with the iPhone the volume is very changing. I have loud songs (those which were matched) and I have very silent songs (those that needed to upload to the cloud).
This is very annoying. What can I do? Why does sound check not work on the iPhone? I would be content with regaining my songs to a higher level. But to wich one? And can I re-upload the updated files to the cloud?
Questions and questions ... any hints very much appreciated.
Edit: In the meantime I found out to wich level I must set my own songs. In MP3Gain the setting is "97". But this does not help very much because I am not able to re-upload songs to iCloud. Even if I delete a song from iTunes Match and make iTunes add it afterwards the song is not re-uploaded. It seems that the iCloud does not delete songs immediately and it does not recognize that a file has changed. The track will only be re-activated (or undeleted) with the old level. Sad, sad.