For some obscure reason, your software flat out refuses to import about 1500 tracks that it says are "bad." I don't know what your program is looking at, but I have no bad tracks. They all play properly in all the media players I have installed for testing (MediaMonkey, iTunes, WMP, PowerAmp, MusicBee, Google Play.)
I have tried removing the check that prevents the program from importing previously removed tracks. Any other ideas?
I would like to purchase MC, but there is no way I'm going to kiss good-bye over 1500 tracks just because MC doesn't like them.
Why they wouldn't have imported in the first place is puzzling. It is certainly possible that there could be some obscure encoding or tagging bug that would have tripped MC up, but I can't imagine that it would have impacted so many files! I wonder if something else was going on when MC tried to do the import scan? Maybe an anti-virus was blocking (or slowing substantially) access to the files?
In any case, if it turns out to be a problem with MC's importer, I'm
sure Matt will fix it if he can get a sample file. I'm skeptical that it is a problem with the importer (or the files) in this case though, as there are so many of them. If the problem was that common, we'd see all sorts of complaints.
Before we go down that route, I'd recommend trying to re-import them.
Once Media Center determines that a file is "bad" it doesn't re-check the file on subsequent auto-imports.
There is a way to remove them from this "bad list" and have MC try again to import them. However, this is no longer necessary with 18.0.127 and newer. Now, when you run the import scan "manually", the "bad list" is ignored and MC tries to re-import all found files.
So, make sure you have the latest build of MC18 (currently 18.0.128, at the top of this board), and try re-importing them by going to Tools > Import > Import a Single Folder.
If that doesn't solve it, please post back, and if you can perhaps supply logs and maybe a sample file, that may help the developers track down the issue.