I need to be able to easily copy the path of a file or album so I can open a tagging app (mp3tag or foobar, etc.)
...and easily get to the file's location. I find that in the bliss interface I can't even select and copy a path.
Where would you like to see this, on the album page?
What is the reason you need to open it in MP3Tag - there are lots of reasons I know, but I'd like bliss to cover them :)