Using flac with DVDs on Studio Pro 4?

Hello,

I'm trying to help my friend who is helping me make a DVD menu for a release I want to put out on DVD. It would be audio and video. He says he is unable to use flac in this program (Studio Pro 4). I have read about ALAC and I don't want to use this format. I have read some of the instruction manual and it says there is some risk in "lossless linking". I don't know what this is, but there is too much content to use WAV or AIFF formats, so I'm really hoping FLAC can work somehow. Can anyone help lead me to the lossless light? Or am I going to have to release a DVD with mp3s on it?

Thanks in advance.

 

Well apparently ALAC is also a format that can be used with his program, but not FLAC, even thought FLAC is probably a much better format. I will begin to look up the quality of AC-3 audio. Thanks.