Like I mentioned in the past, I use Youtube to look for a lot of the multimedia I use. It's free and it has a wide of variety of cartoons, movies and music. I would recommend to ALWAYS screen videos before showing your children, you never know.
I also like to look for music CDs made specifically for language learning and play them while the children are playing in their room or riding in the car. I found that by playing the same CD (repetition) children internalize what they hear and soon enough they sing the songs and in turn learn to apply what they hear in the songs.
One series of music CDs I really enjoy is the "Teach Me" series. I use the Italian version and my kids love the songs. The songs cover vocabulary, greetings, days of the week, numbers and lots more. The songs are very catchy and I often find my kids singing along to the music. What I also like about them, is that they are affordable. I invested hundreds of dollars in a learning system and the quality of the music was nowhere near this.
The holidays are nearing, what a great opportunity to find holiday music in your target language and play them to your children. For affordable holiday music, or any learning resources, Google can be your best friend. Always remember to screen everything before you expose your child. I would also try and use music that uses relevant and simple language that your child can understand. For example, I found an Italian Christmas carol on Youtube, and although it was beautiful, it was in old Italian which is not only complicated but also irrelevant.
Of course if you want to make things really affordable, make up your own songs, perhaps by using new vocabulary you would like to introduce or words you are currently covering. Songs needn't be complicated or with music. You can even use songs you already know in English and simply translate them to your target language. If all else fails, buy a CD or Google a song.
As usual, I welcome your questions. Feel free to post your questions to the questions page or email be by using the contact form on the 'Contact Us' page.