Improvements

1. Track cover art now supports searching up to 3 levels of parent folders. When no cover image is found in the track's folder, the player will search upward through parent directories for up to 3 levels.

Bug Fixes

1. Fixed an issue where rapidly changing search keywords on the search page could display results from the previous keyword.
2. Fixed an issue where entering a keyword that would never return any results still displayed all tracks on the search page.
3. Fixed an issue where the start offset of tracks parsed from CUE files was incorrect in some cases.