I did an similar system for a photografer that resize images. See my ideas bellow:
- Secure admin login: For secure login, the webserver/site must be a SSL certificate instaled. The password will be criptografed.
- Artwork upload that accepts jpg, png, tiff and gifs. Automactically convert it to 400px x 400px and optimaze the filesize.: The system resizes the images. I need test tiff extension.
- Audio-upload: If possible, a auto-convertion to mp3 from wav. Otherwise just a wav- and mp3 uploader.: to convert that, the webserver must have appropriate software and able to webserver, if no aviable I can do 2 fields.
- The possibility to attach a link to a webpage.: Ok, is possible.
- Possibility to write in up to 10 mailadresses who will get an auto-generated mail with link and short-url, when the ecard is finished.: Ok. We can make a table do store all typed e-mails.
- When finished it generates an ecard similar to the one in the link (maybe with gradient background, css-sprite buttons and logo in the buttom). It will generate a link with a random foldername like "dfdsg45dsg5757sdg" to hide it for Google and it will also generate a short-url.: Ok
If you want more ideas tell me.