Learning the speak and listen by yourself is going to be really, really hard. I hate to say it like that and I wish you the best, but you have a mountain infront of you. Hopefully the evening classes will start back up...
Look on-line for any language aids that include a CD for listening practice. Record yourself reading the dialogues and play them back checking against the book's CD. Try to correct sounds and cadence that way. Of course, as you know, the best way to learn speaking/listening is in Japan. Subtitled movies (I wouldn't go with anime, you need to see the mouth/sound relationship) can be good. You can tape a sheet of paper over the English at the bottom part of the screen to check if you get the meaning.
Stick with it! You have a big challenge ahead of you, but not an impossible one.