Button text for Multilingual Flash applications?

I’ve got a project that is being translated from English to French and Spanish with possibly more to come later. The entire project uses fewer than 100 strings. If I want to get fancy I might build an XML translation document, otherwise I might just build a translation lookup table in a simple AS include file and read in the entire table at start. Either way I’m puzzled about what to do with text strings that do not support dynamic text, namely text inside buttons. This represents a good portion of the total number of strings. I could just suck it up and build localized versions of each button but this feels very inefficient, anyone have advice on a better approach?