I am using a Windows PC. It just took 13 minutes to refresh. the tags were all simplified as per above suggestions.
I notice that it takes a verrrry long time for the refresh progress bar to get to 50% and then it goes rather quickly to completion. I am wondering if it is having trouble with the files in the main memory, vs the SD card. The main memory has, in the music directory, my party songs directory, split into 3 subdirectories of approx. 500 songs each. Is there some directory file number limit or issue with the firmware that may be the culprit here?