IBM Aptiva 2139 E57. External CD writer plays audio CDs OK. Internal CD (non writing) will not play audio, but reads data etc. Line In & Line Out do not appear to be functioning, nor are they shown on the PC. This means there is no way I can get tapes, vinyls, etc into the PC fro recording/editing. The Line in/Out was working. However a hard drive failure meant everything had to be reloaded from original CDs... Have I missed something out, and where do I look for it. PLease help; I've promised to put some tapes to CD for a friend who is moving away next month. I'll be in the dog house! Thanks in anticipation.