Downloadable product

Hi everybody.

First of all, Excuse my english which is far from being perfect but I’ll try to do my best to be understood.

I have just installed wordpress.( I didn’t know it some days ago). I found it very powerfull, but before strarting to use this framework i would like to know what are its limitations : ( if it has :-D).

I would like to créate an e-commerce application.after downloading and activating the wp-e-commerce plugin.I try to upload some downloadable products, but I noted that the file size could not exceed 2MO.
Isn’t possible to upload big size products whitin WORDPRESS.( Music, Movie,…etc)

Tbanks in advrance for your answer.

B.Réda.