I am using e-jay for standard music and Hoster for the karaoke. I use the default sound card for both. The e-jay has two MP3 player decks and indivdual slider volume controls as well as a fader to mix between players. I start a karaoke song and fade out the track that is playing on the dj software. This seems to work well excluding the inability to use headphones to que up sound effects and sound bites from the program. I will look into a dual output sound card, this seems like the ticket if you as me.
