... i have found it as very good product. Great job guys 
... Only one things little bit missing there is something as Total Commander style "Multi-Rename Tool". I would have found it very useful especially in combination with "Filename - Tag" function ...
Please have a look at the converter Tag - Filename.
And please don't post your requests and questions via mail and on the forums -- posting it on the forums will do it.
... sorry for mail, i have discovered this forum after i have written mail ... so i looked at this Tag-Filename as you recommended, and it is really comfortable and effective, but there is one small issue. Here is one example:
... if I have filenames created with Track number and Filename together as for example "05. Stairway to Heaven" and empty Title, i have to choose this way:
- Filenam-Tag
- Tag-Filename with Format string: "$mid(%_filename%,5,$len(%_filename%)-4)"
- Filename-Tag again
... as you see, it requires basic knowledge about some simple string converting functions in VBA or other languages, and that i found very difficult to use for common users ...
Just use Filename - Tag with a format string like %track%. %title% to import the track and the title field to the tag.
If you meant something different, please be a little bit more specific.