The RPA has a storage file with a set file size. You have used 5% of this space. 95% free.
The HC has it's own storage file with a set file size also. You have used 98% of it. 2% free.
Most files loaded on an HC are not needed after programming your LM's. I suggest leaving picture files on the HC.
Sound files are the big consumers of space on the HC. The other file types are inconsequential.
If you need to transfer more sound files to the HC, consider removing sound files that you are not needing for programing LM's currently.