I found this article showing you how to download things from The Sims 3 Exchange without the need for an account with a valid serial code.
According to the article below you can use an outdated version of the Android Last.fm scrobbler and it works without the paid subscription. I tested this and it worked yes, but you have to install this app called Aptiode that acts as a separate app store that has cracked versions of pay for apps in order to install the Last.fm file which is .myapp instead of .apk. I would suggest to uninstall Aptiode right away after installing the Last.fm app.
Instead of getting the desktop app that cant play music from Last.fm without a paid subscription you can get this light weight plugin.
Winamp Plugin: http://oxo.lv/lastfmscrobbler/
Hope i can ever get this.
I just added a page for changelogs on all my projects including the site itself.
Yay now you can print your 3D guns. Not much else.