When you are ready to send the file you can use Package for Sharing found under the File menu. 

This will combine your timeline file (*.tlm4, *.tlm3 or *.tlmp) with all linked files and package it in a TLMZ file


This TLMZ file can then be opened with  Timeline Maker,  or charts may also be viewed in Powerpoint.  There, you should use the Timeline Maker menu.  All events will show your links on the Interactive charts..