when the file size is less than the calculated prebuffer size, then the 
oss_loop() waits for data indefinitely.  modifying the code to set the 
prebuffer size to a limit of the file sample size fixes the problem on an 
ix86 platform. not much testing has occurred outside of the specific test 
set of .wav files (most of the .wav in the system sounds area).

patch for audio.c in xmms 1.2.3 pre:

--- Output/OSS/audio.c	Thu Sep 14 14:57:01 2000
+++ Output/OSS/audio.c.fix	Thu Sep 14 14:56:39 2000
@@ -396,6 +396,11 @@
 			off += cnt;
 
 		}
+		//
+		// eliminate hang in oss_loop when size of 
file<prebuffer_size
+		//
+		if(prebuffer_size > off)
+			prebuffer_size = off;
 	}
 	else
 	{