Duration Time is missing on some tracks

[djJJ127]

The large majority of my analized tracks are showing the duration time properly, but the are some where the duration time is missing. All other info is there: keys, artists, albums, etc. The program knows the duration because the time remaining is right there in the track loaded box. Do you have a solution. If all else fails, can I just take the time remaining number and manually insert it into the info section like changing other tags... so far, it seems that section in the info section is locked for changes.

[discopex]

Is that mp3s or some other formats?

[djJJ127]

Thanks for your reply.

Many of the tracks are m4a (AAC), some are aiff. But the majority of files like these were analized with duration times. It's only a small percentage that are missing duration tags.

Another clue might be this.
When analized, the title comes up as, for example:
03 Give Me Everything
with no artist, album, or genre... only BPM, Key and Gain filled in.
Perhaps it's an import problem?

By the way, I'm running Cross DJ 3.0.0, the newest version, which I downloaded about a month ago, and my controller is the U-Mix Control Pro. Thanks for any help.