If you plan on using the CD you should be ok. If you need help disciplining the class I would use your co-teacher. But if there is no co-teacher here are some things I do:
1. For 1 or a few kids disrupting class - stare at them, stand next to them, ask them to stand up, call out their names, and if that doesn't work, tell them "One more time and I will move you." while pointing to a chair in the front of the classroom or away from their friends.
2. If you want to quiet down the class - Clap 3 times rapidly saying 1,2,3. Then teach them to mimic you. After clapping there's a nice period of silence. I've also used "If you can hear me, clap once." Usually one or two students knows the word 'clap' and I use hand signals to say 1. I say "Thank you" to those that clapped, and go on to say "If you can hear me, clap twice." etc..
Here are some games I play to supplement the CD.
1. Please game (Simon Says) - works well with most verbs.
2. Mime game - also works well with most actions.
3. Pictionary - works well with nouns like food or clothing.
4. Racing game - works well with dialogues. For example: Split the class into two teams and choose a student to be the runner. The students stand up. Practice the key phrases, and then say "Go!" The runner says "What's your name?" to a student on their team. That student answers and sits down. The first team with everyone sitting down wins.
5. The Bomb/Typhoon/Banana game - PPT game
6. I say You say - Using flashcards or a PPT. Have 5 or 6 pictures up. Point to one and say what it is. For example "Tiger", and the students repeat. But if you say the wrong word for that picture, the students should be silent.
7. Pass the ball - PPT game
8. Speed writing - Split the class into two teams lined up at the board. Say a word. For example "Saturday". One student from each team writes ONE letter. Then the next writes the second letter, and so on.
9. Songs - Many lessons have better songs on Youtube that other teacher's have made up. For example, for '6th Grade Lesson 10 I'm taller than you' you can use Daft Punk's 'Harder, Better, Faster, Stronger' song.
Good luck teaching and I hope this helps.