Thank you, one more question: howto change track number 245 - ... to 245 (e.g.), goes for any track number in the filename.? So remove the space and dash, looked into Regular Expressions - Howto - Mp3tag Community but there is only mentioned 245 to 245 - I need it the other way around. And the correct German syntax is correct, but this is the way I like all my files to look, the same in my media players!
You could try Convert>Filename-Filename
Souce: %1 - %2
Target: %1 %2
That worked great, large folders piece of cake now Thanks a lot