There are some proposals for making one satellite all - slavic TV programm that would broadcast
various TV show, entertainement programmes and films in original soundtracks with multi-slavic language subtracks or subtitles.

How about add there some subtitles in e.g. slovio / slovianski / or sloviensk ?

Polish language is too lisping (comparing to other slavic langs), russian is on the other hand too - "soften" - when the russian speaks English he even "soften" english syllables and it sounds funny.

Yugoslav langs (croatian, serbian,...) are too "out or slavic intonation" - very similar to italian intonation. Bulgarian is "swallowing" some vowels and add consonants to consonants. Ukrainian and Belorussian are something among russian, polish and slovakian langs. Czech is too prolonging the vowels in words (it is good for music as well as some Yugoslav langs).

Slovakian is somwere in among them all (somewhere among "soften" russian and "hard" czech or serbo-croatian).

"Czech is too prolonging the vowels in words"
same applies to Slovak

Yes, it's good. Therefore our languages are good for singing.