But it's not worth. As I mentioned above, AllegroCDFS cannot read a single DVD more than CacheCDFS. You can as well use CacheCDFS which comes free with OS 3.5 and 3.9.
The main advantage of Allegro is speed. It was marketed as the fastest Amiga CDFS. On the other hand, CacheCDFS is one of the slower. (from some brief test that i did) Much slower than AmiCDFS in accessing directories.
I see that no one mentioned this CDFS. It is free and you can get it from Aminet.