i dont understand this thing with wavepad. i have to explain it in detail.
ok, first of all, i have an audio cassette tape, like this: http://jinternets.files.wordpress.com/2007...etscassette.jpg
the equipment i use are:
RCA cables
Audio Stereo adaptors - i connect both of them - 1 to the audio cassete PLAYER and 1 in the line in source at back of the pc
i click on record on wavepad, press play on the cassette player and it starts playing. - I CAN HEAR THE SOUND OF THE AUDIO TAPE PLAYING ON THE SPEAKER - i want to listen to music from the internet or from saved music on my pc. - how can i do that??? i cant, because the line in source - the audio tape is already playing. MY QUESTION IS, IS THERE ANY WAY TO LISTEN TO MUSIC WITHOUT HEARING THE AUDIO TAPE FROM THE LINE IN SOURCE PLAYING??? 
if you understand whatn im talking about. i cant turn the volume down on the cassette player otherwise wavepad wont even be able to record the sound.
anyway can you help???