I'd like to create a tab in my layout showing the songs in the library having the same name as the played song (to see the different versions or covers of a song in a songtree updated when song change)

Does anybody have any idea on how to do this??

IT's easy in v1.1.x, this layout does that :

Type= P
Name=Same title
VBmain = _SongTree(group=Play:title)

it's a P-layout, it can be inserted in a TabbedLists/Context/NB as a page
There is alreay included 3 similar layouts for same album, same artist, and same year. I'll include this one too.