I spoke with Roland and they told me the high speed cards write in "bursts" and that is why they are bad for audio. Audio needs steady stream of data...like the "slower" cards employ. I received my R-09 Thursday and have been carrying it with me. I have recorded ~20 miscellaneous things and when I went to transfer to PC, the poop hit the fan...the PC recognized the R-09, but didn't see any files...I reformatted the SD assuming that it would lose all those recordings, but when it was done formatting...much to my surprise... the recordings were available and recognized by the PC...and the played fine, so this is a heads up to other R-09 users that you too could run into the "Initial Data Transfer Bug"...
Studiodawg