I was wondering if there is a file number limit in this program?
I have close to 52000 music files. When the program starts indexing the files it gets to about 6,000 quickly, then it slows down to indexing one file every 5 to 10 seconds. Is this normal? Is there a way to speed this up?
What do you mean by "indexing"?
Mp3tag does not create an index (unless you mean the one of the local freedb).
If you mean "loading" then the loading depends on how fast Mp3tag is forced to use the paging mechanism of Windows where chunks of data get swapped to the harddisk which is by to the power of 10 slower than the RAM.
So the fewer other applications run at the same time the more electrical memory (RAM) is available for Mp3tag.
Mp3tag should be able to cope with 50000 files.
Probably the media files are rather big?
Probably the embedded tag's sizes are rather big?
Probably the write access to the temporary storage in your system is rather slow?
Sometimes I think this phenomenon has to do with the amount of the embedded images, but I am not sure.