Sorry for being confused but I am having a hard time getting my head around all of the SEF stuff.  I am able to get SEF components working on my site at http://www.framereviews.com/

Here are a few questions:

1.You mentioned that this file works with OpenSef 1.1.2 beta.  Where are you downloading the file from?  I was able to find OpenSEF 2.0.0-RC5_SP2 at j-prosolution.com. 
http://projects.j-prosolution.com/en/projects/os-projects/download-opensef.html
Is this the correct SEF extension.

2. I could not find OpenSEF listed at extensions.joomla.org.  Is this project still active?  Does any one know why it was removed? Or was I looking in the wrong place?

3. Is OpenSEF the best SEF component? Why is this the best one?  I have used 404 SEF before and that seemed to work fine but I am more that willing to move to a different component.

4. I have a copy of the sef_ext.php file.  How do I install this file?  Assuming that this works with the version I mentioned above.

Thanks for all of the help!

I have three menu items type component jReviews:
Itemid 1: com_jreviews Menu type Directory (set to the only Directory I have = 1)
Itemid 2: com_jreviews Menu type Advanced search
Itemid 4: com_jreviews Menu type Submit new item

I want the directory listings URL:s to be ruled by the first one, but they are not. Advanced URL:s are only produced if I set OpenSEF Configuration > Components to use the com_jreviews Menu type Advanced search (check Use and give it an alias). The reason I do not want to use an alias for the search menu item is that I use it as frontpage.

So this is the setting I want: In OpenSEF Configuration > Components tab, I have set Use alias = direktory (misspelled just to avoid any possible conflict). For the other two com_reviews menu items I have tried both "Exclude" and unchecked.

But as I said, this does not work. It seams to me like the Directory type menuitem does not support advanced urls. Hope I am wrong...

That's what I thought, and that's why I use itemid1 for the directory (as I wrote above).

Edit: Maybe that needs some explanation - I went into the database and changed the itemid for the directory menu item.

Since it worked with itemid2, I deleted the menu item with itemid1 and changed the search page into directory type. Then I added a new menu item with Advanced search. I can not use url type as you suggested since it should be the start page.

Anyhow, now it works.

Next question:
The url:s for the directory are pretty long...

For the directory it is:
mydomain.com/[opensefalias]/m/2/directory/[directory_name]/
(where does the /m/2/ come from?)

For the categories they look like this:
mydomain.com/[opensefalias]/listcategory/[directory_name]/[section_name]/[category_name]/

In reality it means keywords are repeated several times. Not very good for SEO

Is there any way I can cut it shorter?

Thanks for your comments. Personally I think that OpenSEF has many advantages compared to JoomSEF and SEFAdvance, but I see you point since the new version of OpenSEF is quite delayed.

I think I found the problem and I also found that editing content does not work either so I will try to fix that as well and post the new file then.

I'm using ARTIO with my installation at: www.realcbratings.com and it works fine. I've had lots of problems with Opensef in the past, and figured out how to get this working on all my sites (with certain settings in the htaccess and globals). If you want any details on it, please let me know and I will post them. Thanks.