Today Songza just got bigger by embracing one of its rivals. The music-search engine (and Crunchies nominee) is incorporating song search results from Seeqpod, expanding the number of songs it can stream from 15.5 million to 23.5 million. Now you can get results from both music search engines in one place. Songza is also considering incorporating songs from Skreemr and other music search engines in the future.

Previously Songza pulled songs solely from Youtube (by only playing the audio track of music videos). Seeqpod is an MP3s search engine that finds songs and streams them from across the Web, including ones that may infringe copyright. (Read this post by Michael to understand why this actually might be legal).

Songza is also launching a Self Promotion beta for artists who want to promote their bands on the site. For 99 cents, bands can get a song on the recommended list of Songza’s home page for 24 hours. The site gets about 40,000 visitors a day. That translates to 1.2 million visitors a month. Not too shabby for a site that launched in November. The company is working with Creative Commons to get the word out about the beta, and is populating the recommended list with Creative Commons artists. Once it builds an actual recommendation engine, which it is working on, it will pull in other songs as well.

Last month, Songza was spun off from Humanized, whose co-founders were recently hired by the Mozilla foundation. Songza will continue to be run as a separate business. It is currently seeking funding.