Hi Dusty,
thank you for your reply.
1.) In fact, when I first found this song in the internet, it was written in 3/8 time. Now I have also found the song in a song-book in 6/8 time. I don't know how Hannikainen wrote it. But both measures make sense, because the stress should be on the first eighth note of a group of three. 3/8|oo|oo|oo|oo|... resp. 6/8|oo oo|oo oo|...
If I'd put the 6 eighth notes into a 3/4 measure, I'd get 3 quarter notes resp. 3 groups of 2 eighth notes rather than 2 groups of 3 eight notes. 3/4|OO|OO|... resp. 3/4|o oo oo|o oo oo|
So I think, a 3/8 or 6/8 does make sense and gives the song the touch of a dance...
2.) Not at all - you are welcome to use it! Thank you for asking... Enjoy!