Is it okay if you plug your Yamaha DJX series keyboard into your standard microphone jack on your pc using your rca outputs via a rca to mini-headphone jack( if forgot the measures and vary from country to country) like you would use to run a i-pod to a stereo.And am keeping volume very low. worked on my old pc but now I have a HP Pavillion 1TB hd, AMD Athalon II ,running Magix Music Maker 15.I'm starting to recieve error messages and have had this program for 2-3 days. Mainly hoping to find out if this is hurting my soundcard? Should i jus wait till i have an audio interface???