Islah-ul-Muslimeen Contains siraiki poetry of Hazrat Pir Mitha (rahmatullah alaih) of Larkana in Siraiki [Download from the books section] http://www.islahulmuslimeen.org
Seraikitec A good website for help on installing Siraiki support in PCs, contains a good phonetic keyboard layout for Siraiki http://www.geocities.com/seraikitec/