i am a beginner musician.. and i got 3 songs that produced on sonar x1.
Pls comment.Are they good or bad ?

http://www.youtube.com/watch?v=d2rUIh1psGo

http://www.youtube.com/watch?v=jm3dmYrgk4k

http://www.youtube.com/watch?v=izVYRenhthM

thanx.

Not bad. It seems like you are producing these as backing tracks for somebody else to complete, and in that sense you accomplished your goals. Whether somebody can actually make use of them and throw in a good hook or melody... that remains to be seen, Mix wise they sound pretty good. Again, its hard to judge as other elements are still to come. Welcome to the forum. - Shad

thanx for the comment.i am thinking the buy a sound card.Can u suggest me any sound card ? i have got realtek.

There are hundreds of possible solutions depending on budget, use and tastes. If you have a local music store that sells musical production equipment, I suggest going and spending some time talking to the people there who can demonstrate the uses of the different products.

Welcome to the forum, Andy.  You have demonstrated your engineering skills, and they sound pretty good.  If you're using Sonar, then consider one of the Roland USB devices that were practically made for Sonar.

big thanx for the all comments.