Issue #2 
Add two functions to create the taginfo knowing the format.
Info * Info::create_tag_info_with_format(const string & filename, int format);
TagInfo_Info * taginfo_info_factory_make_with_format(const char *filename, int format);

p.s: Not the ideal solution.. But add more than 600 songs to Pragha. In fack the same that with taglib.