get at least a usb audio interface device... as stated by uglyguy below...
sir .. your problem is ... your software records what ever your soundcard produces ... so if your playing back a song ... yun ang ma record nya ..... i forgot how to fix it .. got the same prob dati ... but as i could remember yun software mo eh meron source option yan ..... and even your soundcard may recording/playback option yan .... may option ka dun where the laptops gets the signal to record .... but i would suggest you use a usb interface ... mas ok ang naka usb interface rather than direct sa line in/mic in ng laptop mo .. yun latency kasi medyo mag kaka problem ka .. minsan di sabay yun pag record at playback ..
you will definitely experience latency issues, tone issues, and recording issues(like noise, etc) when using the mic in/line in of your pc... unless you have a high end sound card... external sound cards can only do so much... it works the same way anyway...
always check the input and output source of your DAW (recording software... e.g. Cakewalk, Sonar, Audacity, etc)... i suggest you continue with Cakewalk... Audacity works well during the recording and is very easy to use... but when you export your track, it usually will make your track either fast or slow (the track as a whole or even some parts of it... )...
that's the prob with Audacity... continue with Cakewalk, get a USB Audio Interface device (Behringer is the cheapest one i know and someone is selling one at the classifieds, MAudio jamlab works well too - these are for the 'tight-budgeted' home recording musician)... and again, check your input and output source...
you can also check the net for temporary and permanent fixes... there are technical forums that have discussed the solution for these kinds of recording issues...
Here is a link to the FAQs for a Cakewalk user -
http://soundsgoodpro.com/cakewalktips.htmi hope that helps... cheers!
P.S.
sorry but this query should've been posted here -
http://talk.philmusic.com/board/index.php/board,74.0.htmlcheers bro! tuloy na natin ang jamming minsan...