You can find 45 national anthems lyrics, translation, and brief information with YouTube movie and MIDI files.
In addition, there are 22 patriotic songs and marches at this page (photo: UN European headquarters in Geneva, Switzerland /source: Wikipedia).
National Anthems Index (alphabetical order)
Australia
Austria
Argentine-
Belgium -
Brazil -
Bulgaria 
Canada
China-
Croatia -
Czech -
Denmark 
Finland
France
Germany-
Greece
Hungary
India
Indonesia
Iran
Ireland
Israel
Italy
Japan
Korea
Malaysia
Mexico
New Zealand
Netherlands
Norway
Philippines
Poland
Portugal
Romania
Russia
Saudi Arabia
Slovakia
South Africa
Spain
Sweden
Swiss
Thailand
Turkey
U.K.
Ukraine
U.S.A.