In a project sounds and images can be compressed when posted on the internet, making the size of the file smaller. So you can add projects that have more than 10mb, as long as you can compress them enough..as far as i know
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If you can't compress them enough like Flait7 said, then you have to upload it to another website.

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As the above two said, you can upload it to another url if it still is too big when compressed. An alternative is to ask Ihaveamac about increasing Java memery, because he knows how, but once 2.0 comes, out, I don't think you'll have to worry, because 2.0 isn't using Java player.
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