If an audio file is too loud, if a photo does not fit or a background image would fit better to the text if it were mirrored, you will have to edit the files before you upload them. Here are some free online tools you can use:


Browser-based tools 
for editing photos and audio files (without download):


Free online photo editing:


http://www.photofancy.com/

This free tool helps you to edit pictures directly with options like changing the size, cropping, mirroring or adding effects.


Free online audio editing

http://mp3cut.net/


Free software for downloading:


Free audio editing software


Audacity for Windows

http://www.chip.de/downloads/Audacity_13010690.html


Audacity for Mac

http://www.chip.de/downloads/Audacity-fuer-Mac-OS_31901383.html


Free photo editing software


Gimp for Windows

http://www.chip.de/downloads/GIMP_12992070.html


Gimp for Mac

http://www.chip.de/downloads/Gimp-fuer-Mac-OS_22783981.html


Direct link

http://gimp.lisanet.de/Website/Download.html



Free video editing software


MovieMaker for Windows

http://www.chip.de/downloads/Windows-Movie-Maker_13007023.html


Blackmagic Fusion for Windows

http://www.chip.de/downloads/Blackmagic-Fusion_73983556.html


Shotcut for Mac

http://www.computerbild.de/download/Shotcut-Mac-8909172.html