Version 4.0 is a combination of numerous new and enhanced features.
New Features include: A) SMB Uploads – v3.0 introduced downloads from Mac/Windows/Linux computers – v4.0 introduces uploads to those same computers; B) Search by Name – pull down on list and search by typing in the name of a Song, Artist, Album, Genre; and C) Auto-bookmarks for Long Play Songs (audiobooks, podcasts, EDM live sets).
Enhanced Features include A) updated Play Queue current song visuals; B) Songs everywhere enhanced long press context menu; C) Local/In-app songs without embedded cover art default to local JPEG file (folder.jpg or albumartsmall.jpg); D) Settings to filter out DRM and/or CLOUD items at the library level; and many more various bug fixes and optimizations.