BuddyPress.org

== my users to upload their mp3’s and images to my site – on my storage.. on my hard disk.. not on those hosting servers==

There’s a plugin BP-Gallery ($30) which can do what you need above with images and audio uploads plus video uploads and video embeds.for single user and/or groups.

There’s also the BuddyPress Media/BP Album+ plugin
stable version – images – https://wordpress.org/extend/plugins/bp-album/, https://buddypress.org/community/groups/bp-album/
beta version – images, audio, video embeds – in Google code repo