The links from JewishGen do take you to existing LDS microfilm scans on FamilySearch. I believe that the issue Harlan has is how to go from that link, which opens the entire film in a gallery view, and points to the first image. From there, getting to the particular image within that film is somewhat complicated, and varies between the different books/archives. But it rarely gives you the exact page/scan number so some amount of searching of the images is required, which in this case might involve some understanding of the language. I look at the Slovakian books all the time and that's a bit easier since at least the character set is Roman, languages German and Hungarian, not Cyrillic and Hebrew (Yiddish) as in the Lithuanian books.
Basically, what you have from the info in the right hand column is a link then item number - in this case, item 2. Scan through the gallery and look for the black header page that has a 2 on it - they are easy to see but you have to scroll a bit. There is a beginning and end marker for that item and each film might have several in total. The image number for Harlan's entry is not present (-) so you will have to search between those marker pages for the particular entry (about 5 per page in these books, some have more some less). I usually try to do this by date - find a date on an entry that is close, jump ahead a few (or many) pages, repeat.
Researching Goldner, Singer, Neuman, Braun, Schwartz, Reichfeld (Hungary/Slovakia); Adler, Roth, Ader (Galicia); Soltz/Shultz (Vitebsk, maybe Lithuania)