There are a lot of karaoke offerings available on ebay along with great equipment choices shuch as popular Behringer amplifiers and Shure SM58 microphones offered on ebay from time to time to complete your home or small room system perhaps. Karaoke adds great joy to life whether experienced in a karaoke bar or in church or even on an army base, why not at an old folks home, you could cart your equipment around easily enough.
The problem is that a lot of karaoke renditions are not up to par as compared to more professional offerings available from various popular publishers such as Pocket Songs or Sound Choice, Chart Busters DK karaoke and others. And then again they vary among themselves in quality with respect to a particular song, and given the high cost of their cds youd want to make certain you are getting what you are asked pay for.
A very valuable service exists at karaokeinfo.com etc where a huge number of songs and renditions (250,000 at last check) are available to download and compare in their entirety for a minimal fee, around sixty dollars or so perhaps.
When your song lineup is complete you could use a program converter such as that from powerkaraoke.com which converts cd+g format files to popular divX format or Xvid if your player only supports older versions of DivX (such as the MSI Mega View 588 handheld "ipod/multimedia player" 20gb model). You could fit 1000 karaoke songs in DivX format onto a single disc for your disc player or load onto your laptop or portable multimedia player for the rumpus room and select using remote control.
You should be aware that songs such as "when Irish eyes are smiling" and "Danny boy" are in the public domain with respect to the song lyrics and so if you have a band you could get together in church with or perhaps access to an elctronic keyboard there is no reason you couldnt come up with a public domain offering for all to enjoy while hoping to make a dollar on some other songs perhaps in expectation of a thank you from those appreciative of such community mindedness. It amazes me that with all thats spent on foreign aid in this counrty no one has seen fit to commission a single such great offering for us at a pittance of a one-time cost.
Anyway, Its a great way to entertain and to share in a joyous experince for all ages and events. A lot of the equiment you need can be had on ebay while the actual songs are best accessed where you can try them first. That way you wint get burned paying $40 a disc for a complete unreturnable dud.