An extensible full-text search is available for Postgres.
MSSQL full text search
2) You can verify file type support with this:
select * from sys.fulltext_document_types order by document_type;
3) Optionally if you have already uploaded files to noodle you should right click 'rebuild' the 'Databases/noodledb/Storage/Full Text Catalogs/BINARY_DATA' table.
Keep in mind you have to use the advanced search in Noodle and select the Full Text option to use the MSSQL FTS.