well, my sister told me I could visit and do some research about it, and well, they're available at mostly Japanese sites, some songs are hard to find though, I watched some on YouTube, but I have the soundtracks of Pub and GO!, Mein Gott, and Absolutely Invincible British Gentleman.
posted over a year ago
I have almost all of the songs possible from hetalia. If you don't want to research a lot, then look at my VERY long answer.
Audio.isg.si. You don't need to be a member and they have everything from Maru Kaite Chikyuu (even though you don't need that...), Hatafutte Parade, and all the Character Songs like Carrot and Sticks and With Love, From Iceland. There are also Fanmade songs.
Type in youtube to mp3 and when you are at a song you want on youtube, just right click the box where the song is and press copy video url or something and go back to the youtube to mp3 page and right click again and press paste then it will say convert video. Press that button and when the picture of the video shows up, press the word download and then you have the songs you want. Also, you might want to have youtube and the youtube to mp3 of different tabs. Also, sorry that it was like a summary.