I wasn't clear enough. The tracks were all fine and would have played thru had I let them. However, I interrupted them by going to another track and then another after I listened enough to each one to satisfy my interest. While I was doing this, I soon realized that the tracks were disappearing as I clicked on the next selected track. This effect appeared to only happen with this album and in fact when I just now attempted to replicate more track loss, the remaining tracks would not disappear on this album either. Just before my initial post I had just checked that some random albums' tracks seemed to be complete and wouldn't disappear either. The lost tracks only occurred in one or two sessions with that one album. There is an extra issue. I have several cd albums that are listed under 'various' because the lead singer shared singing with some of her well known singing friends. This album is one of those, BUT I haven't lost tracks from a couple other 'various' albums I just checked (and had similarly scanned). If anyone knows where 'various' tracks go if they loose their association, they could be there I suppose. As usual, I hadn't thought to Google this issue until I posted. I found a 37 page active chat about this and similar track loss that began in 2009 and continues to the present. I suppose this could be a random general problem. I can always re-rip the cd but I was (and am) afraid that the problem will repeat. I am still wondering if I accidently clicked on some setting that hid the tracks so they wouldn't repeat and now should change a setting that will un-hide them.

I would download the itunes installer from Apple and run it without uninstalling. It should recognize that there is an existing installation and do a repair or something along those lines. But I would install with the installer rather than just trying the new updates. It could be that the files you're missing are files that aren't used all the time.

More info: TFC (Temp File Cleaner) will clear out all temp folders for all user accounts (temp, IE temp, java, FF, Opera, Chrome, Safari), including Administrator, All Users, LocalService, NetworkService, and any other accounts in the user folder. It also cleans out the %systemroot%\temp folder and checks for .tmp files in the %systemdrive% root folder, %systemroot%, and the system32 folder (both 32bit and 64bit on 64bit OSs). It shows the amount removed for each location found (in bytes) and the total removed (in MB). Before running, it will stop Explorer and all other running applications. When finished, if a reboot is required the user must reboot to finish clearing any in-use temp files. -- TFC only cleans temp folders. -- TFC will not clean URL history, prefetch, or cookies. Depending on how often someone cleans their temp folders, their system hardware, and how many accounts are present, it can take anywhere from a few seconds to a minute or more. TFC will completely clear all temp files where other temp file cleaners may fail.

I just now got back to trying to updating iTunes to vs 12.. I have checked and I "am" logged in as administrator. There is no password. There is only one account on this computer. I can't click on the update and choose Run As Administrator...... I can't update....it goes clear thru the installation process, and then the error pops up with the message as before...... The installer has insufficient privleges to access this directory C:\Program Files\iTunes\iTunes.Resources\nb.lproj. The installation cannot continue Log on as administrator or contact your system administrator This is an Itunes program on Windows 7. I recently updated in September. In order to talk to apple for help, I will have to pay for it, I think.