XDS_REC allows to record sounds that a program produces using the 
XBIOS-routine 'Dosound'. For that it hooks into the XBIOS vector and then 
writes the sound string into a file whenever Dosound is called. The first 
file created will have the name '0000.XDS', the second '0001.XDS' and so on. 
The files will be created in the current path each time. XDS_REC will be 
active until the next reset of the computer!

XDS_PLAY allows to replay .XDS-files. For that it passes the contents of the 
selected .XDS-file to the XBIOS-routine 'Dosound'.
