on Soulseek, there is an auto-resume function if downloads were interrupted. you can also search for the same file from another user to continue, if the download stopped because someone went offline. But there is no multi-download feature (no downloading of the same file from more than one user at a time).
it is for any files, not only music, but it looks like the most users are focussing on music files. It is a program mainly for off-mainstream-music, and I found almost anything I’ve ever been looking for (sometimes with a little patience, but their wishlist-function works very well) 
you can also check the Soulseek-topic here on the site — there is a Freakscene chatroom on Soulseek (Freakscene Junkies), where we meet occasionally
:aliensmile: