icroons isn\'t really a place to buy songs even though they are linked to sites to buy songs ie karaoke-version.com & karaoke.net it\'s more for a place to search for songs. If you like a more complete song search that includes Karaoke Version, karaoke.net, SBI, Sunfly, Sunfly US & Zoom download links (again depending on where you are the links might be restricted to UK buyers only but at least you can see if something is available) use
https://db.openkj.org/ Even the disc legacy listings are more complete overall. icroons only list 2 sites which this site includes in the searches as well and is updated daily as opposed to icroons updating every few weeks.
Obviously you\'re not concerned with looking for legal download sources with the freekaraoke and buykaraokedownloads links you provided.
The ones Roy linked to (except for the karaoke.net & karaokecloud) are all UK only and IP restricted to US customers - not sure where you are located.
www.allstarcustom.com is another, nothing new really (I think 2015 is the last release) but one of the only Disney authorized sites and they have some stuff not available elsewhere.