No evaluation stars on m4a

[DAG70]

Hi,

I'm trying CD Ripper. I love the concept, but :

1. When I add Rating stars in the tags, they are only visible for MP3 rips but not for m4a : is it normal ?
2. My original CDs (even old ones) are not read by the tool (error message for most titles -but not all). Strangely, I can play them in with no problem both with my CD burner or with my HiFi CD reader.

Thanks.

[Spoon]

You would have to post the error message.

The star rating is based on ID Tags, there is a standard location in mp3 to store them, in m4a there is not.