iTunes Keeps Copying The Same Music Every Sync

well its been a while and someone else might already had posted the solution but what the heck... coincidentally, i was having 2 issues with itunes and the solution to 1 of them actually solves this issue too so here goes:

Song name shows as Grouping name on iPhone

Have this same issue itunes 12.6.1.25 iphone 6s 10.3.2 about 230 songs.

Has nothing to do with mono tracks on mine, a lot of the tracks are ripped from Vinyl or CD, but I think it is just the last songs I added, maybe it has to do with space requirements, although I have 7gb left on phone ?

I don't have recents synced, can't even find an option for that, it's not in my smart list.

Incidentally I rip everything at 320kps aac CBR no joint stereo.

I'm having this problem on an old Classic iPod. 5686 songs reload every time I sync. I failed to pull the cable quick enough after the last sync and it started syncing again.

I understand that I can delete the 5686 songs and reload them, but how can I isolate them from a song set of about 25,000. All with individual rating tags. There's got to be a better fix out there.

I've looked into the other issues identified in this thread, and they didn't seem to be the cause of my 73 songs. But what was true was that all of those 73 songs had been encoded as mpegs. So I tried using iTunes to convert them all to AAC, and was careful to delete the originals. But that didn't work. So I deleted the iTunes preferences, and that didn't work either. I also wondered if the mpegs were still in my iPhone, but I don't find them there.

Still working on it.

Are they in a Smart default playlist like "recently played" or "recently added" which you have checked to sync ?

Same problem here, with 185 songs! Any news?

I just noticed something. I own the Beatles' boxes issued in 2009, both the Mono and the Stereo versions. I noticed that the songs iTunes is repeatedly copying are exactly those whose albums exist in both collections. This means they have exactly the same name, year, and artist labels (album titles are different, because they contain the words "Mono" and "Stereo").

I made an experiment and excluded them from the list of synced songs: the problem disappeared. As I put them back on, iTunes started recopying them again.

Definitely looks like a bug in iTunes.

Rafael

You might want to try a Restore of your phone.

I am having the same problem with iTunes (currently 10.6.1 (7)). Every time I sync my iPhone 3GS, about a dozen Mono Beatles tunes are re-copied to the phone, even though they are already there. They are from boxed sets of Beatles CD's I purchased years ago. Each Mono cut from an early Beatles album has "[Mono]" appended to the title. They are all encoded in AAC, low complexity, mono, 160kbps. They were encoded with iTunes 6.0.2, Quicktime 7.0.4.

I agree it appears to be an iTunes bug.

Does anyone know... Is there a way to do something equivalent to "deleting prefs" for a flaky app... except somehow resetting all the music sync data for the iPhone instead?

My only thought is I might try a Restore of the iPhone. I'd have to be sure to get all my photos etc. off of it first, then Restore through iTunes and reload everything. I know this "last resort" option is there for fixing many problems, but I don't want to try it until I'm sure it's not just an iTunes 10.6 bug in the first place.

You might want to try a restore though. Just make sure you have all your photos, videos etc. off of there and backed up somewhere first. You do it by choosing "Restore" from the itunes window when your phone is plugged into the computer (it can't work over Wifi).

Please post back your results if you try it. Thanks.

I've had this problem for a long time. I'm a musician and have stems and mono mixes in my iTunes folder.

I noticed that the hundreds of problem songs are in mono. I just converted them to Stereo and this seems to have 'solved' the problem. I put quotes around 'solved' because it's really an annoying workaround. This bug has persisted for years and Apple should get it fixed.

Until they do, convert the problem-songs to Stereo.

And remember it will all need to copy one last time.

Also note this problem only seems to happen when you have "Convert higher bit rate songs to..." checked. If you have the space on your iphone, leave that unchecked.

Also remember after converting to stereo you'd need to delete the mono files from your iTunes. OK - good luck.

Just to bump up this thread, and to add another bit of info: I've just synchronized my whole library to a 1st gen Apple TV, and the problem doesn't happen. Maybe because of what livinginaboxers said about downconverting the songs to 128k AAC. I do have this setting on my iPhone, but not on the Apple TV.

A question about converting the songs to stereo: does this mean necessarily duplicating the original mono track (and as such the files will be twice as large) or is there a smarter way to do it, like e.g. the joint-stereo feature of MP3?

Cheers

Rafael

I'll add to this. Every time I sync my iPod Touch, it resyncs the same 90 songs that are in Mono. Every time. Very disappointing that iTunes keeps doing this.