I don't know why anyone would post these particular songs in one go like that either.
For the record according to Amhránleabhar Ógra Éireann authorship for some of the songs is credited as follows :

Amhran na bFhiann Peadar Kearney translated (to Gaelic) by Liam O Rinn
Boolavogue       Words PJ McColl Air trad
Bold Fenian Men   Peadar Kearney
Kelly the Boy from Killane PJ Mc Coll
The Minstrel Boy       Thomas Moore
A Nation Once Again    Thomas Davis
O Donnell Abu          M. J. Mc Cann
Óró Sé do bheatha abhaile P.H. Pearse (air trad see previous threads)
The Rising of the Moon    John Keegan Casey
The West's Asleep          Thomas Davis