Files Not Appearing When Browsed
There are a few possibilities. WinMX limits how many files can come up when an user is browsed. 5000 files is the maximum for a Primary connections. People using a secondary connection are limited to 3000 files.
The other reason is that you might not be set up to share that particular filetype.WinMX defines what type of file you are sharing by the file extension (For example vladd44.exe, the extension is exe) .
To make sure the filetypes you are sharing is shared go here for more details.
And Last, you need to add the folder you have the files in to your shared files. Shared Files, Shared Folder (see below).