New indicators for shared file and byte counts were added to folder lines within the interface.
Windows 9x (95, 98, Me), Windows 2000, and Windows XP.
Like its predecessors, it supported both the WinMX Peer Network (WPN) and OpenNap servers, the latter allowing users to access a broader community and permanent "hotlists" of friends. System Requirements and Compatibility
Although the official WinMX.com servers were shuttered in September 2005 following a cease-and-desist from the RIAA, the 3.54 Beta 4 client survived through community-driven efforts.
The Library view was updated to remember expanded folders between sessions, improving organization for users with large collections.