I think that that's where the issue lies. I assume the search is using the wrong value range and thus finds tracks from the wrong rating.

rating:3.5 shows every one of my 4-star tracks. I don't have any rated with 3.5, so I'd think it would show 0 tracks.

I guess this is a tricky area because the rating system is actually based on 0-100 as I understand it.

rating:3
seems to give me all 3 and 3.5 star as well as a few 4 star tracks.

I think something might be wrong with the value range searched to be searched. The 4 star tracks weren't tagged with MediaMonkey, but do show 4 stars in MediaMonkey itself.

rating:3.5
Gives me more 4 star tracks than the 4 star node as well as the 3.5 star tracks.

Strange results indeed!

For example,

'rating: 3'
( or 'rating: 3.0' )
･･･This criteria give me a rusult which include 3 & 3.5

'rating: 3.5'
･･･This criteria give me a rusult which include 3.5 & 4

'rating: 3.5..3.6'
･･･This criteria give me a rusult which include only 3.5