Yes, you can distribute mashups through Unchained Music, but there are some important considerations:

• Permissions from Rights Holders: It's often challenging to get the necessary permissions from the rights holders of the original tracks used in your mashup. You need explicit approval to use their music legally.
• Clearance of Rights: If you're not completely sure whether you have the appropriate clearance for the music used in your mashup, it's likely that you haven't obtained the necessary permissions.

It's crucial to have all legal aspects sorted out before distributing a mashup to avoid any copyright issues, and you will not be able to distribute unless you have these permissions.