If you know for certain that the music is not copyrighted, you can add it to your site. Do not automatically assume that it is okay to add original music that is found on another site to your site, though. It's best to contact the site owner to ask permission to use their original work, even if you do not think the music is copyrighted.
te amo by MAKANO, Panama Music. Machete Music
This answer has been removed due to an un-satisfactory response.
carlos moscardini
Un poinf c'est toi by Zazie
"KV" is the abbreviation of "Köchel-Verzeichnis" and more common in Europe whereas "K" is more used in Anglo-Saxon countries.
There is no such thing as "un-copyright". Something is either copyrighted or not. If it is copyrighted, then the copyright eventually expires, making it public domain.
A website is "un site internet", or "un site web" in French.
un amateur de musique, un audiophile (for classical music)
you can not un-register form this site.
"Con un sito" is an Italian phrase that translates to "with a site" in English.
"...a worthy site to see..." = "un sitio valioso para mirar..." "...a site that is worth the seeing..." = "...un sitio que vale el mirar..."
un-
"Un oso y un amor" is a song by the Spanish singer Morat. You can find it on various music streaming platforms such as Spotify, Apple Music, and YouTube.
un site d'enfouissement
un site classé, un parc naturel régional
un
The prefix that can be added to the word "fortunate" is "un-" to create "unfortunate."