My recollection is reading that there are two storage sizes with CD-Rs, and the Sony 9000 plays one size and not the other. Hearsay, but it seemed to be a good source.
Even "Cheap" CD-RW work in Sony 9000ES
Well I went down to Best Buy this week and bought the cheapest no name CD-RW's to try in my Sony. I bought a 10 pack of "PNY" Technologies CD-RW's for $7.99 (.79 each), burned them on my HP CD writer+ 9300, and guess what...They worked on the 9000ES!!!!! I even erased one and re-recorded over it and it still read it just fine!!! Now if I can just find a CDR blank with the same reflectivity properties as the CD-RW. I'll keep trying different CDR's and IF I find one that works I'll report back!!