I've found websites with a lot of russian and soviet aviation songs in mp3 and with the lyrics !
I looked for them for years, since I'd heard them in some videotapes about soviet aviation, but they were unfoundable.
I'm maybe the only crazy guy interested by that , but if someone want them too, he can go here :
and here :
the entire website is in russian, but you can translate it with http://www.translate.ru (in english, german, french,...)
sorry for my poor english (for information i don't speak russian too, so it isn't too difficult to find the songs on this website )