--- /usr/src/sys/dev/sound/pci/ich.c	Mon May  1 12:20:19 2006
+++ /ich.c	Mon May  1 12:19:49 2006
@@ -284,7 +284,9 @@
 	for (i = 0; i < ICH_DTBL_LENGTH; i++) {
 		ch->dtbl[i].buffer = base + (ch->blksz * (i % ch->blkcnt));
 		ch->dtbl[i].length = ICH_BDC_IOC
-				   | (ch->blksz / ch->parent->sample_size);
+				   | (ch->blksz /
+				   ((ch->channel->direction == PCMDIR_PLAY) ?
+				   ch->parent->sample_size : 2));
 	}
 }