Replay to Joe Solla I'm running Xy3+ v. 3.54 under DOS session of Windows 95 (v. 3.55 does not support the autoreplace feature, which I find very useful). From time to time, changing computers and operating systems, I needed to change the values for ck, eb and ec. On the PC I now use at home (portable 486 class) the values in the startup.int file are: - default kc=2000,500 - default cb=400,60000 - default eb=300,60000 On the PC I use in the office (desktop pentium class) the values are: - default kc=300,1000 - default cb=400,60000 - default eb=300,60000 I verified, for both the computers, that the value of the first parameter is very critical and machine dependent: for example, changing it from 300 to 400 will change enormously the timbre and the audibility of the sound. With the above values I obtained a very comfortable click sound (warm, low frequency click) and two very "alerting" beeps, clearly different each other. May be the 256 increment you experimented via xpl is a too high increment to find the correct value. Hope this help Ciao Adriano Ortile